Glandular Hyperplasia Research Articles

The state of metabolism of carbohydrates, lipids, indicators of pro-inflammatory status and oxidative stress in obese patients receiving treatment for glandular hyperplasia of the endometrium

The state of metabolism of carbohydrates, lipids, indicators of pro-inflammatory status and oxidative stress in obese patients receiving treatment for glandular hyperplasia of the endometrium

Effectiveness of hysteroscopic transcervical resection in the diagnosis of lobular endocervical glandular hyperplasia: A case report

Effectiveness of hysteroscopic transcervical resection in the diagnosis of lobular endocervical glandular hyperplasia: A case report

Trichomonas gallinae Identification and Histopathological Study in Pigeon (Columba livia domestica) in Baghdad City, Iraq

Trichomonas gallinae causes avian trichomoniasis, which is one of the most common protozoan infections in birds worldwide. Therefore, this study was conducted to investigate and identify the Trichomonas gallinae in domestic pigeons (Columba livia domestica) by microscopic examination (direct smear and Giemsa stain) and histopathological examination in Baghdad city, Iraq, during the period from beginning of October 2018 to end of March 2019. Giemsa-stained cytoplasm with light purple and nucleus with dark purple, clarification of flagella, nucleus, and cytoplasm very well. Histopathological findings of infected birds showed gross existence of yellowish white caseous necrotic material in the oral cavity and esophagus. The histopathological examination in the larynx, esophagus, trachea, crop, liver, and lung as infiltration of inflammatory cell mainly (heterophils); thickening of mucosa because of extensive infiltration of heterophils and disruption of esophageal gland; the thickness in bronchi wall of lung due to glandular hyperplasia and muscular fibroplasia, in liver focal necrosis of parenchyma with mononuclear cell (MNCs) infiltration and granuloma composed of MNCs and heterophils. The current study may contribute to determining the histopathological changes of esophagus, trachea, crop, and liver of trichomoniasis- infected pigeons.

Anatomo-functional characteristics of the pelvic organs in women with habitual miscarriage and chronic endometritis

Chronic endometritis is a clinical and morphological syndrome, which under the influence of an infectious agent contributes to the violation of cyclic biotransformation and reciprocity of the endometrium. In the diagnosis of gynecological pathology, in particular chronic endometritis, or habitual miscarriage on the background of chronic endometritis, ultrasonography is a mandatory, non-invasive and highly specific method of research. The aim of the study was to assess the anatomical and functional condition of the pelvic organs in women with habitual miscarriage and chronic endometritis using ultrasound (ultrasound and Doppler) criteria. We examined 98 women of childbearing age who applied to the Inomed clinic in the city of Vinnytsia during 2019-2020. Patients were divided into two groups: the main group – 68 women with habitual miscarriage and chronic endometritis; control group – 30 re-pregnant women without previous pregnancy loss. Initially, ultrasound examination (ultrasound) of the pelvic organs was performed on day 5-7 of the menstrual cycle, and to monitor folliculogenesis, the study was repeated on day 13-17 of the cycle. One of the main signs of chronic endometritis is the heterogeneity of the structure of the endometrium, which was found in the vast majority of examined patients of the main group (80.88% at n=68). When determining the thickness of the endometrium, two diametrically opposite processes were established, namely: atrophy (39.71% at n=68) and atypical glandular hyperplasia (22.05% at n=68). In the second half of the menstrual cycle there was a significant thinning of the endometrial layer <0.6 cm. In the control group during the ultrasound examination revealed the following disorders: increased uterine peristalsis, dilation of the arcuate plexus, the heterogeneity of the subendometrial layer, and when re-ultrasound took into account the data of folliculogenesis. Follicular cysts were detected in 10.3% of cases in the main group and 3.3% in the control group of women. At the time of re-ultrasound in each ovary was observed 5-8 antral follicles (the size of which ranged from 6.8 mm to 11.5 mm) with the presence of one dominant, the size of which ranged from 18.2 to 23.4 mm. In order to increase the informativeness of ultrasound, Doppler was additionally performed. Thus, ultrasonography is a highly specific method for determining the anatomical and functional characteristics of the pelvic organs, in particular the pathology of the endometrium in women with habitual miscarriage. The main ultrasound characteristics of chronic endometritis, as one of the causes of reproductive losses, are changes in endometrium structure, thickness, the presence of additional structures (polyps) and fluid component. Informativeness of ultrasound examination of structural changes in the endometrium in chronic endometritis is complemented by Doppler characteristics of blood flow in the basal and spiral arteries of the uterus.

Usefulness of the 'cosmos pattern' for differentiating between cervical gastric-type mucin-positive lesions and other benign cervical cystic lesions in magnetic resonance images.

To evaluate the usefulness of the 'cosmos pattern' (CP) on magnetic resonance (MR) images for differentiating between gastric-type mucin-positive lesions (GMPL) and gastric-type mucin-negative lesions (GMNL). This study included 131 patients with clinical suspicion of lobular endocervical glandular hyperplasia (LEGH) who underwent pelvic MR imaging and a Pap smear and/or latex agglutination assay. Differences in MR findings, such as cyst and solid component patterns, cervical location and T1-weighted image (T1WI) signal intensity, were compared between GMPL and GMNL. The diagnostic performances of the findings were assessed. The frequencies of CP (63.1%), upper part (UP) lesions (72.3%) and hypointense area compared with the cervical stroma on T1WI (61.3%) were significantly greater in GMPL than in GMNL (P < 0.05). The sensitivity, specificity, positive predictive value, negative predictive value and odds ratio of the CP for diagnosis of GMPL were 63.1%, 87.9%, 83.7%, 70.7% and 12.4, respectively. In GMNL, a 'macrocystic pattern' was observed in 65.2% of patients; an isointense or hyperintense area on T1WI was observed in 86.4% of patients. The sensitivity was highest (90.8%) when one or more of the following were observed: CP, UP lesion, or hypointense area on T1WI. The specificity was highest (95.5%) when the CP was observed as a hypointense area on T1WI. The CP is a highly specific finding for diagnosis of GMPL. If the CP is observed as a hypointense area compared with the cervical stroma on T1WI, GMPL (i.e., LEGH or gastric-type mucinous carcinoma) should be strongly suspected.

Usage of pharmaceutical contraceptive drug for controlling Eobania vermiculata snails by baits technique

The present study focused on evaluating the effects of oral administration of three different concentrations of Yasmin® combined contraceptive pills (estrogen and progesterone) on reproductive hormones levels, histology of the ovotestis and rate of oviposition of E. vermiculata for two months using baits technique. The levels of anti-müllerian hormone (AMH), Follicle stimulating hormone (FSH), Luteinizing hormone (LH), Estradiol (E2), Progesterone(PRG), Thyroid-stimulating hormone (TSH) and Testesterone (T) of treated snails were decreased with increasing the drug concentrations by percentages of -83.3%, -78.9%, - 59.6%,- 98.3 %, - 79.6 %, - 86.7% and 8.2%, respectively. Prolactin (PRL) level was significantly increased (86.9%) compared to control snails after 8 weeks of exposure. Histological investigations on the hermaphrodite glands of snails treated with 909 μg/gm. showed glandular hyperplasia, sloughing of germinal epithelium, acini sizes reduction, suppression of follicular growths, decreased luteinization and vasodilation. Male acini revealed histolytic of spermatogonia and mature sperms. The lowest concentration (303 μg/gm.) caused gradual decrease of the total egg counts that reach 50% at the 8th week of treatment. Higher doses (606 and 909 μg/gm.) resulted in dramatic dwindling of egg numbers and inspiring complete egg cessation at the 7th and 3rd weeks of treatments, respectively. The applications of combined contraceptive drugs as baits give promising results for controlling high population densities of E. vermiculata snails at Sharkia Governorate, Egypt.

Pathomorphological Characteristics Of Glandular Hyperplasia Endometry In Women According To The Data Of The Bukhara Regional Pathological Bureau

The results of examination of 107 patients with glandular hyperplasia of the endometrium are presented. The age of women ranged from 43 to 67 years, on average it was 41.2 + 2.6 years, of which 76 patients were of reproductive age and 49 during the perimenopause. The diagnosis of glandular hyperplasia was established on the basis of morphological scraping of the uterine mucosa. The morphological forms of glandular hyperplasia of the endometrium were analyzed and a comparative analysis of the frequency of all this pathology in the Bukhara region was carried out. The results of the study showed a high growth of this pathology, the cause of which is uterine bleeding, which was confirmed by morphological examination.

HISTOPATHOLOGY OF CELIAC DISEASE. POSITION STATEMENTS OF THE ITALIAN GROUP OF GASTROINTESTINAL PATHOLOGISTS (GIPAD-SIAPEC)

Celiac Disease (CeD) is an immune-mediated inflammatory disorder of the small intestine, affecting genetically susceptible individuals when exposed to gluten. Small intestinal biopsy interpretation has been the “gold standard” for celiac disease (CeD) for over 50 years. Despite today’s availability of sensitive and specific serological tests, the histopathological features from mucosal biopsy play a key role in diagnosing when CeD is suspected. Such a diagnostic approach requires a multidisciplinary team to optimize both tissue sampling and interpretation via the interaction between the pathologist and the gastroenterologist. Pathologists of the Italian Group of Gastrointestinal Pathology (GIPAD-SIAPEC), together with a member (TR) of the Italian Society of Technicians (AITIC) and an expert gastroenterologist (CC), provide position statements as a practical tool for reading and interpreting the report.Moreover, a position statement was formulated about the recently described condition known as Non-Celiac Gluten Sensitivity (NCGS). Within such a diagnostic setting, both the architectural abnormalities of the duodenal mucosa, namely glandular hyperplasia, and villous atrophy and the number of intraepithelial T-lymphocytes should be well highlighted. Ancillary tests such as anti-CD3 stain are useful for an accurate count of the intraepithelial T lymphocytes when CeD or NCGS is suspected. Moreover, anti-CD3 and anti-CD8 stains are recommended in patients not responding to the gluten-free diet (GFD) to confirm a diagnosis of Refractory Celiac Disease (RCeD). Diagnostic clues about the differential diagnosis of both CeD and RCeD have also been rendered.

Limited frequency of malignant change in lobular endocervical glandular hyperplasia

IntroductionAlthough lobular endocervical glandular hyperplasia is a benign disorder of the uterine cervix, its potential as a precursor of minimal deviation adenocarcinoma has been reported. However, the natural history of...

Characteristic Cytological Findings of Lobular Endocervical Glandular Hyperplasia Associated with Adenocarcinoma of the Uterine Cervix

Objective: To investigate the cytological findings of lobular endocervical glandular hyperplasia (LEGH) associated with adenocarcinoma and to clarify its characteristics and the coexisting adenocarcinoma using histochemistry and immunohistochemistry. Methods: Eighteen surgical cases of LEGH of the uterine cervix were retrospectively reviewed and classified into 3 groups: pure (pure type), atypical (atypical type), and LEGH with adenocarcinoma (mixed type). The mixed type is defined as LEGH or atypical LEGH with in situ or invasive adenocarcinoma. Cytological findings of conventional endocervical smear specimens (Papanicolaou stain) were analyzed. Histochemistry (periodic acid-Schiff reaction) and immunohistochemistry (M-GGMC-1, Muc-6 glycoprotein, and Ki-67) were performed using tissue specimens. Results: Cytologically, the pure type (7 cases) is characterized by glandular cell clusters that tended to form monolayered sheets with uniformly small nuclei and contain golden-yellowish mucin, whereas atypical (5 cases) and mixed (6 cases) types are characterized by glandular cell clusters similar to those of the pure type, but with complex glandular structures and mucin localization on the surface of glandular cell clusters. Ki-67 labeling index was significantly higher in atypical and mixed types than that in the pure type. Gastric-type mucinous carcinoma (MC-G) was observed in 2 out of 6 cases with mixed type. Conclusions: LEGH is found to be associated with adenocarcinoma types other than MC-G. Complex glandular structures or mucin localization on the surface of glandular cell clusters may be useful cytological findings to detect atypical and mixed types of LEGH.

Clinical analysis of 30 patients with atypical glandular hyperplasia or malignant transformation in foci of adenomyosis

Objective: To explore the clinical characteristics of patients with pre-malignant or malignant transformation in ectopic endometrium of adenomyosis. Methods: A retrospective study was performed on 4 818 patients received surgical treatment in Peking Union Medical College Hospital and pathologically confirmed as adenomyosis from January 2010 to October 2016. The clinical features and prognosis of 30 patients among these with pre-malignant or malignant transformation in ectopic endometrium were reviewed. Results: A total of 4 818 patients pathologically diagnosed with adenomyosis. Among these,30 (0.62%,30/4 818) patients were diagnosed with pre-malignant or malignant transformation in foci of adenomyosis, including 16 (0.33%, 16/4 818) of atypical endometrial hyperplasia and 14 (0.29%, 14/4 818) of endometrioid carcinoma. The average age of 30 patients was (50.8±3.0) years (range: 27-65 years). Patients with atypical hyperplasia in foci of adenomyosis coexist with 13 cases of endometrioid carcinoma in situ, 1 case of borderline serous papilloma in eutopic endometrium, 1 case of atypical hyperplasia in eutopic endometrium, and 1 case of normal eutopic endometrium. Fourteen patients with endometrioid carcinoma in foci of adenomyosis coexist with endometrioid carcinoma in situ. Among the 27 patients with pre-malignant or malignant transformation in adenomyosis and coexisting with endometrioid carcinoma in situ, 23 of them were in International Federation of Gynecology and Obstetrics (FIGO) stage Ⅰa (85%, 23/27), 2 in stage Ⅰb (7%, 2/27), and 2 in stage Ⅲa (7%, 2/27). Seven percent (2/27) of patients had deep myometrial infiltration, and 7% (2/27) of patients had lymphovascular space invasion. The median follow-up time was 60 months (range: 32-104 months), and there were no recurrence or death. Conclusions: The incidence of atypical glandular hyperplasia or malignant transformation in foci of adenomyosis is rare, and it may be closely related to endometrial disease in situ. Pre-malignant or malignant change in foci of adenomyosis seems not to increase the risk of deep myometrial invasion, lymphovascular space invasion, and recurrence or mortality in patients of adenomyosis with endometrial adenocarcinoma.

Management of Pediatric Chronic Rhinosinusitis

Chronic pediatric rhinosinusitis is a common entity, with an annual incidence of 4% in the US schoolchildren’s population. The predominant contributing factor in younger children is adenoid pathology and in older children, allergic rhinitis. Recent research on sinus microbiome, biofilm, inflammatory response, and therapeutic alternatives is providing new insights in this prevalent disease. Adenoid size does not correlate with the severity of the disease suggesting that it is due to the biofilms observed in both adenoiditis and hypertrophic adenoids. There is new consensus among the experts on the definition and clinical diagnosis of pediatric chronic rhinosinusitis (PCRS). In PCRS, inflammation is mediated by helper T lymphocyte type 2 with limited glandular hyperplasia or fibrosis observed histologically. Both innate and adaptive immunity contribute to the heterogeneous inflammatory pathogenesis of PCRS that is driven by genetic, environmental, and microbiome factors. Medical treatment includes nasal hygiene, anti-inflammatory, and antibiotic therapy. When medical treatment fails, adenoidectomy is the surgical treatment of choice in children less than 6 years old, adenoidectomy plus possible endoscopic endonasal surgery (EES) between ages 6 and 12, and EES for children 12 and older. Balloon sinuplasty has been reported to be effective between 70 and 80% in older children. This review focuses on the most recent PCRS consensus statements, novel research in histopathology and microbiome, and the evolving medical and surgical therapeutic options for this challenging disease.

A novel calcimimetic evocalcet for the management of secondary hyperparathyroidism with little effect on the gastrointestinal tract and cyp isozymes in vivo and in vitro

In the treatment of secondary hyperparathyroidism of end-stage chronic kidney disease, vitamin D receptor activation and allosteric modulators of the calcium-sensing receptor - inhibit glandular hyperplasia; reduce parathyroid hormone levels, impact on bone turnover and mineral density. Cinacalcet, an oral calcimimetic agent has been widely used for the management of secondary hyperparathyroidism in chronic kidney disease. Nevertheless, some patients remain refractory to the treatment, as the dose of cinacalcet cannot be sufficiently increased due to gastrointestinal symptoms and it strong inhibits of cytochrome P450 (CYP) 2D6. In order to resolve this issue, was develop a newly synthesized calcimimetic agent, evocalcet (MT-4580/KHK7580). In a rat model of chronic kidney disease induced by 5/6 nephrectomy, and in multicenter, open-label study phase 3, and in clinical practice oral administration of evocalcet efficiently suppressed the secretion of parathyroid hormone. Evocalcet also demonstrated the less induction of emesis and gastro-intestinal effects, and its pharmacological effects were observed at lower doses because of its higher bioavailability than cinacalcet. In addition, evocalcet showed no substantial direct inhibition of any CYP isozymes in in vitro. These findings suggest that evocalcet can be a better alternative to cinacalcet with a wider safety margin.

The Evolving Spectrum of Precursor Lesions of Cervical Adenocarcinomas.

Modern classification schemes divide cervical adenocarcinomas into human papillomavirus (HPV)-associated and HPV-independent types. The precursor lesions of the former are well known and comprise HPV-associated (usual/endocervical) adenocarcinoma in situ (AIS) and the much less common stratified mucin-producing intraepithelial lesion (SMILE). The precursor lesions of HPV-independent cervical adenocarcinomas are much less well known, although postulated precursors of gastric-type adenocarcinoma include atypical lobular endocervical glandular hyperplasia and gastric-type AIS. In this review, we cover HPV-associated and HPV-independent precursor lesions of cervical adenocarcinomas concentrating on diagnostic criteria (morphology and immunophenotype) and differential diagnosis. We propose a uniform terminology and diagnostic criteria for precursor lesions showing intestinal differentiation with goblet cells because this may be a feature of both HPV-associated and HPV-independent AIS.

Estudo anatomopatológico dos pólipos endometriais diagnosticados por histeroscopia

A incidência de malignidade em formações polipoides do endométrio tem sido estudada recentemente em diversos países, encontrando-se entre 0 e 4,8% na maioria dos trabalhos. A crescente utilização da ultrassonografia transvaginal mesmo em mulheres assintomáticas aumentou a frequência desse diagnóstico em nosso meio. Diversos estudos recomendam a exérese e a avaliação histológica de toda a lesão polipoide visualizada no exame histeroscópico para exclusão de malignidade, porém essa abordagem não é consensual, sobretudo quando as pacientes são jovens ou assintomáticas. O presente estudo avaliou 458 resultados de exames anatomopatológicos de pacientes com diagnóstico histeroscópico de pólipo endometrial, admitidas em laboratório de patologia geral. O diagnóstico histeroscópico confirmou-se em 79,9% dos casos (76,0–83,3%, IC95%) e a prevalência do adenocarcinoma foi de 5,25% (3,7–7,9%, IC95%) em todos os exames. As atipias celulares foram identificadas em hiperplasias glandulares simples ou complexas em 1,9% do total de pólipos endometriais (0,9–3,8%, IC95%). A idade maior ou igual a 51 anos comportou-se como variável fortemente associada à maior prevalência de lesões malignas e pré-malignas, que nesse grupo etário representou 12,2% dos diagnósticos. Comparando-se ao grupo de pacientes com idade entre 41 e 50 anos, a razão de prevalência foi de 2,96, com odds ratio de 3,23. A prevalência de 6,99% de lesões pré-malignas e malignas encontrada na população geral do estudo em pauta justifica a preconização da exérese histeroscópica e o exame histopatológico de todo achado na cavidade endometrial, independentemente do tamanho ou do aspecto macroscópico benigno que o pólipo possa aparentar.

Discriminant analysis and interpretation of nuclear chromatin distribution and coarseness using gray-level co-occurrence matrix features for lobular endocervical glandular hyperplasia.

Lobular endocervical glandular hyperplasia (LEGH) is a disease considered to be the origin of tumorigenesis of minimal deviation adenocarcinoma, which has characteristic expression in the gastric pyloric mucosa. It is difficult to diagnose by nuclear findings because of lower nuclear atypia. In this study, nuclei of endocervical (EC) and LEGH cells were digitized, and nuclear information was quantified from nuclear images and objectively evaluated using a computer. We examined whether it is possible to distinguish between EC and LEGH cells, which is difficult by human eyes. Signal intensity, morphological features, Otsu thresholding technique and gray-level co-occurrence matrix (GLCM) features were calculated from nuclei of EC and LEGH cells on cytology microscopic images. Then, discriminant analysis was performed using the significant difference test and linear support vector machine (LSVM). GLCM features in LEGH cells were higher than those in EC cells. The nuclei of LEGH cells had a higher frequency of signal value pairs with a larger signal value difference than that of EC cells. Therefore, LEGH cell nuclei are thought to have more chromatin granules, and the chromatin is coarse and granular. Moreover, in the LSVM discriminant analysis, the accuracy of GLCM calculated using these features was 85.4%. In this study, GLCM accurately demonstrated the nuclear chromatin distribution and coarseness. Discriminant analysis of EC and LEGH cells using GLCM features is useful.

Impacts of trace metals on African common toad, Amietophrynus regularis (Reuss, 1833) and depuration effects of the toad's enteric parasite, Amplicaecum africanum (Taylor, 1924) sampled within Lagos metropolis, Nigeria

The study aimed at assessing the depuration potentials of endoparasite, Amplicaecum africanum on trace metals in its toad host, Amietophrynus regularis at sites of significant anthropogenic perturbations within the Lagos metropolis, in Nigeria. A total of 120 toads of both sexes, alongside 45 soil samples were collected from each of three (3) stations labeled Dumpsite, Lagoon front and Highrise, using hand nets and by hand-picking between February and October, 2018. The intestinal tissues sections of the toads were examined using a binocular dissecting microscope (American Optical Corporation, Model 570) and hematoxylin and eosin (H&E) stain. Oxidative stress in toad intestine was assessed by estimating the levels of glutathione peroxidase (GPx), superoxide dismutase (SOD), catalase (CAT), and lipid peroxidation (MDA). Trace metals in the water, soil, toad liver, intestine and parasite, Amplicaecum africanum were tested using Atomic Absorption Spectrophotometry (Philips model PU 9100). Lead (Pb), copper (Cu), nickel (Ni), cadmium (Cd), and chromium (Cr) were detected in the toads, with the infected toads having lower concentrations of most trace metals than the uninfected toads, irrespective of the locations and sex. Strong negative correlations between parasitological indices and concentrations of trace metals in the toads suggest that the parasites might have taken up significant amounts of trace metals from the host. The study demonstrated the potentials of parasite, A. africanum to depurate trace metal burden in Amietophrynus regularis. When the dominant factor impacting the toad is the parasitic infection, parasite intensity determines the trade-off between parasitological harm and depuration benefit to the host. Hence, under controlled conditions, parasites may serve as bioremediation agent in the event of pollution. Depuration potential of A. africanum in the study was supported by the mild tissue alterations observed in the intestine of infected toads, compared to the uninfected counterparts, which exhibited severe glandular hyperplasia, increased connective tissue, and severely stunted villi. Consistently lower activities of biochemical biomarkers which characterize the uninfected toads compared to the infected, irrespective of the sex and stations, further corroborate drawn inferences.

Diagnosis and Grading of Prostate Cancer by Relaxation Maps From Synthetic MRI.

The interpretation system for prostate MRI is largely based on qualitative image contrast of different tissue types. Therefore, a fast, standardized, and robust quantitative technique is necessary. Synthetic MRI is capable of quantifying multiple relaxation parameters, which might have potential applications in prostate cancer (PCa). To investigate the use of quantitative relaxation maps derived from synthetic MRI for the diagnosis and grading of PCa. Prospective. In all, 94 men with pathologically confirmed PCa or benign pathological changes. T1 -weighted imaging, T2 -weighted imaging, diffusion-weighted imaging, and synthetic MRI at 3.0T. Four kinds of tissue types were identified on pathology, including PCa, stromal hyperplasia (SH), glandular hyperplasia (GH), and noncancerous peripheral zone (PZ). PCa foci were grouped as low-grade (LG, Gleason score ≤6) and intermediate/high-grade (HG, Gleason score ≥7). Regions of interest were manually drawn by two radiologists in consensus on parametric maps according to the pathological results. Independent sample t-test, Mann-Whitney U-test, and receiver operating characteristic curve analysis. T1 and T2 values of PCa were significantly lower than SH (P = 0.015 and 0.002). The differences of T1 and T2 values between PCa and noncancerous PZ were also significant (P ≤ 0.006). The area under the curve (AUC) of the apparent diffusion coefficient (ADC) value was significantly higher than T1 , T2 , and proton density (PD) values in discriminating PCa from SH and noncancerous PZ (P ≤ 0.025). T2 , PD, and ADC values demonstrated similar diagnostic performance in discriminating LG from HG PCa (AUC = 0.806 [0.640-0.918], 0.717 [0.542-0.854], and 0.817 [0.652-0.925], respectively; P ≥ 0.535). Relaxation maps derived from synthetic MRI were helpful for discriminating PCa from other benign pathologies. But the overall diagnostic performance was inferior to the ADC values. T2 , PD, and ADC values performed similarly in discriminating LG from HG PCa lesions. 2 Technical Efficacy Stage: 2 J. Magn. Reson. Imaging 2020;52:552-564.

Higher expression of phosphodiesterase type 5 in the anterior fibromuscular stroma of the human prostate.

To examine phosphodiesterase type 5 (PDE5) expression in the anterior fibromuscular stroma (AFMS) of the prostate. Although PDE5 expression was identified in the human prostate, differences in PDE5 expression in intra-prostatic regions are unknown. The AFMS in the prostate has peculiar innervations that could contribute to voiding function. Here, we examined regional differences in PDE5 expression in the prostate with special reference to the AFMS. A total 18 human prostate and bladder specimens were obtained. Tissue specimens were processed by hematoxylin-eosin (H&E) staining and immunohistochemistry for PDE5. Immunoreactivity with PDE5 was evaluated using computer-assisted image analysis in the following regions: the AFMS, bladder neck, stromal hyperplasia in the transition zone, glandular hyperplasia in the transition zone (TZ gland), and the peripheral zone (PZ). The correlation between PDE5 expression in the AFMS and clinical data was analysed. Image analysis revealed that the median ratio of the PDE5-immunoreactive area to smooth muscle area by H&E staining was 74.7% in the AFMS. There was significantly higher PDE5 expression in the AFMS than in the TZ gland (p = 0.034) and PZ (p = 0.002). PDE5 expression in the AFMS was not significantly correlated with age, prostate volume, transition zone volume, or transition zone index. However, older men had a tendency to have higher PDE5 expression in the AFMS. We found higher PDE5 expression in the AFMS compared with other prostatic regions, which suggested that the AFMS is a target region of PDE5 inhibitors in the prostate.

Immunophenotype analysis using CLDN18, CDH17, and PAX8 for the subcategorization of endocervical adenocarcinomas in situ: gastric-type, intestinal-type, gastrointestinal-type, and Müllerian-type.

A classification system for invasive endocervical adenocarcinoma (ECA) focusing on high-risk human papillomavirus (HPV) detection has been recently developed. However, precursor lesions of each ECA subtype and immunohistochemical markers that effectively subcategorize ECAs with gastric and intestinal differentiation have not been fully described. Here, we aimed to subcategorize endocervical adenocarcinoma in situ (AIS) by immunophenotype and to characterize the histopathology of each AIS subtype. We immunohistochemically analyzed 36 AIS and 25 lobular endocervical glandular hyperplasia (LEGH) samples using three cell lineage-specific markers (CLDN18, gastric epithelial cells; CDH17, intestinal epithelial cells; and PAX8, Müllerian epithelial cells). The AISs were immunophenotypically classified as gastric-type (G-AIS; n = 2), intestinal-type (I-AIS; n = 10), gastrointestinal-type (GI-AIS; n = 3), Müllerian-type (M-AIS; n = 18), and AIS, not otherwise specified (AIS-NOS; n = 3). All 25 LEGHs were categorized as gastric-type. G-AIS had pale eosinophilic or clear cytoplasm with a small amount of apical mucin and fewer mitotic bodies. I-AIS comprised various numbers of goblet cell-type tumor cells. GI-AIS showed intermediate or mixed features of G-AIS and I-AIS. M-AIS, as with the usual-type ECA, was typically characterized by mucin depletion; however, several lesions had abundant cytoplasmic mucin. High-risk HPV was detected in most AISs but was negative in 100% (2/2) of G-AIS, 10% (1/10) of I-AIS, and 6% (1/18) of M-AIS lesions. In summary, the AIS subtypes defined by immunophenotype had distinct histopathological and etiological characteristics. Thus, immunophenotyping with CLDN18, CDH17, and PAX8 might improve the diagnostic accuracy of histopathological classifications of ECAs.