Difficulties In Differential Diagnosis Research Articles

A rare case of classic Kaposi’s sarcoma with a lesion of the oral mucosa

Kaposi’s sarcoma is a systemic tumor multifocal disease of vascular genesis. In the classic Kaposi’s sarcoma, lesions are most often localized on the skin of the lower extremities, lesions of the mucous membranes are extremely rare. The article presents a rare clinical case of the classic Kaposi’s sarcoma in a 56 years old man with lesions of the oral mucosa. This clinical case is of particular interest due to the difficulties of differential diagnosis of Kaposi’s sarcoma and lichen planus when mucous membranes are involved in the pathological process. The presented case emphasizes the importance of a histological examination of the biopsy in differential diagnosis of Kaposi’s sarcoma. In case when the rash is widespread and the mucous membranes are involved, it is recommended to collect the material from the skin, because the histological picture will be more characteristic. It is important to pay attention to the duration of the elements’ existence, as morphological diagnosis in the early stages of Kaposi’s sarcoma can imitate the pattern of chronic dermatosis.

COMMENTS Vadim V. Polovinkin, Artem V. Volkov, Maria S. Yakovenko, Anna I. Demina The difficulties of differential diagnosis of Crohn’s disease and metastatic breast cancer (case report)

COMMENTS Vadim V. Polovinkin, Artem V. Volkov, Maria S. Yakovenko, Anna I. Demina The difficulties of differential diagnosis of Crohn’s disease and metastatic breast cancer (case report)

Delivering the diagnosis of multiple system atrophy: a multicenter survey on Japanese neurologists’ perspectives

BackgroundMultiple system atrophy (MSA) is a progressive, incurable, life-threatening neurodegenerative disease uniquely characterized by the risk of sudden death, which makes diagnosis delivery challenging for neurologists. Empirical studies on breaking a diagnosis of MSA are scarce, with no guidelines currently established. This study aimed to investigate neurologists’ current practices and experiences in delivering the diagnosis of MSA.MethodsWe conducted a multicenter online survey and employed a mixed-methods (quantitative and qualitative) study design in which responses to open-ended questions were analyzed qualitatively using critical incident technique.ResultsAmong the 194 neurologists surveyed, 166 opened the survey (response rate = 85.6%), of whom 144 respondents across various Japanese regions completed the survey. Accordingly, 92.3% and 82.8% of the participating neurologists perceived delivering the diagnosis of MSA and explaining the risk of sudden death as difficult, respectively. Factors independently associated with difficulties in diagnosis delivery included explaining the importance of the family decision making process in life-prolonging treatment, perceived difficulties in delivering information regarding the risk of sudden death, and perceived difficulties in differential diagnosis of MSA.ConclusionsOur findings showed that the majority of neurologists perceived delivering the diagnosis of MSA and explaining the risk of sudden death as difficult, which could have been associated with the difficulty of breaking the diagnosis of MSA. Difficulty in conveying bad news in MSA are caused by various factors, such as empathic burden on neurologists caused by the progressive and incurable nature of MSA, the need to explain complex and important details, including the importance of the family decision-making process in life-prolonging treatment, difficulty of MSA diagnosis, and communication barriers posed by mental status and cognitive impairment in patients or their family members. Neurologists consider various factors in explaining the risk of sudden death (e.g., patient’s personality, mental state, and degree of acceptance and understanding) and adjust their manner of communication, such as limiting their communication on such matters or avoiding the use of the term “sudden death” in the early stages of the disease. Although neurologists endeavor to meet the basic standards of good practice, there is room for the multiple aspects for improvement.

Cytomegalovirus Colitis: A Case Report

We report a case of cytomegalovirus (CMV) colitis. The patient (a woman with a provisional diagnosis of Crohn disease) presented with severe abdominal pain, diarrhea, and weight loss. Despite difficulties in differential diagnosis, we were able to make the correct diagnosis based on findings of the histological examination of the biopsy specimens obtained during colonoscopy: intranuclear inclusions characteristic of CMV and specific CMV-associated changes in the intestinal mucosa. This case highlights the importance of histopathological examination in differential diagnosis of inflammatory diseases of the gastrointestinal tract.

Libman–Sachs endocarditis: regression after immunosuppressive therapy in a patient with systemic lupus erythematosus

Libman–Sachs endocarditis (nonbacterial thrombotic endocarditis, NBTE) may be one of the cardiac manifestations of systemic lupus erythematosus (SLE). It is characterized by the presence of sterile platelet thrombi on previously normal heart valves. The diagnosis of NBTE is difficult as it is often asymptomatic until complications such as systemic emboli or valvular dysfunction occur. Patients with Libman–Sachs endocarditis and SLE are treated with immunosuppressive and anticoagulant therapy and, if it is ineffective, surgical treatment.A clinical case of SLE and Libman–Sachs endocarditis is presented. The clinical manifestations, diagnostic methods and treatment of NBTE in SLE are discussed. The difficulties in differential diagnosis and selection of optimal treatment tactics faced by physicians are highlighted.

Clinical case of treatment of giant uterine fibroid

Uterine leiomyomas are the most common type of benign tumor that occurs in the female pelvis. Uterine leiomyoma is a tumor of smooth muscles. Its prevalence is higher in the reproductive age group and decreases after menopause. Giant uterine fibroids are a rare tumor of the uterus. Giant uterine fibroids, especially subcutaneous types, are complicated by malnutrition due to deterioration of their blood supply. The complaints of the patients are non-specific: an increase in the size of the abdomen, aching pains, sometimes difficulty urinating and defecating. A physical examination reveals a giant abdominal and pelvic formation. Ultrasound with Dopplerometry and contrast-enhanced MRI diagnoses a giant tumor next to the uterus with a heterogeneous structure and the presence of cystic cavities, which is difficult to distinguish from a true large ovarian tumor. The article illustrates the complexity of differential diagnosis of giant tumor of the uterus and ovaries. There are no significant differences between these tumors during ultrasound and MRI examinations. The final diagnosis can be made intraoperativery. The article presents a clinical observation of the giant uterine fibroids of a 48-year-old female patient. Ultrasound and contrast-enhanced MRI revealed a giant tumor of the right ovary, which occupied the entire abdominal cavity, of a heterogeneous structure. Intraoperatively, two tumors, intimately adjacent to each other, 31 cm and 28 cm in diameter, emanating from the isthmus of the uterus, were found. The final diagnosis of uterine fibroids was established histologically. Difficulties in differential diagnosis between uterine fibroids and ovarian tumors before surgery are associated with the large size of the tumor and the heterogeneity of the structure due to its malnutrition.

Уголовно-релевантный аффект и реакция самовзвинчивания

<p style="text-align: justify;">The relevance of the study is determined by the difficulties of differential diagnosis of criminally relevant affect and emotional reactions, in the genesis of which self-excitation plays an essential role. The purpose of the study is to identify the essential signs of self-excitation, to analyze the psychological mechanisms of its occurrence and development. The phenomenon of self-excitation in individuals with personality disorders has been analyzed in the context of cognitive theories of emotions, neuropsychic homeostasis, affective complexes, dominance and aggression. It is concluded that self-excitation can be defined as a multicomponent mental process that causes the intensification of emotional arousal through autostimulation, which can be carried out both internally and with the mutual influence of both internal processes and external influences. The practical significance of the study lies in the fact that in the differential diagnosis of affect and mental states associated with self-excitation, with a similar phenomenology of the criminal stage, it is necessary to take into account the different psychological mechanism of the emergence and development of an emotional reaction in a pre-criminal situation.</p>

Clinical subtypes of postpsychotic depression in the first episode of schizophrenia: results of a cross-sectional observational study

BACKGROUND: Clinical diagnosis of depression in schizophrenia is difficult because of the dimensional overlap of a number of affective symptoms with negative manifestations of schizophrenia spectrum disorders. In the very first attack of schizophrenia, when the negative symptom complex is not yet clear enough, the difficulties of differential diagnosis become even more relevant, especially when depression occurs in the post-attack stage during the formation of remission and the manifestation of postpsychotic depression.
 AIM: To establish a diagnostic approach based on a combination of clinical-psychopathological and psychometric methods for the assessment of postpsychotic depression in patients with a first episode of schizophrenia.
 MATERIAL AND METHODS: We are examined 1112 patients who had suffered a first psychotic episode. Аfter introducing inclusion/exclusion criteria, two groups were formed in the final design: 243 patients with postpsychotic depression (PPD) and 119 patients without depression in partial remission. Clinical-psychopathological, psychometric (PANSS, CDSS, SCL-90-R scales), and statistical (descriptive, non-parametric statistics — significance level p 0.05) methods were used.
 RESULTS: Based on the concept of positive-negative affectivity, three types of PPD have been identified: with signs of positive affectivity — anxious, sensitive-psychasthenic, depersonalisation-hypochondriacal and melancholic-anergic subtypes; with signs of negative affectivity anhedonic, dysthymic-apathetic and dysphoric subtypes; formed due to psychopathological manifestations of the non-affective register — obsessive-ruminative, agoraphobic, paranoid-symbolic subtypes. Patients who were diagnosed with PPD with positive affectivity after an attack were predominat (p 0.05): 46.91% of the total number of depressed patients. PPD formed due to non-affective spectrum disorders is accompanied by the strongest subjective severity of suffering in patients, compared to patients diagnosed with PPD with positive affectivity. Subjectively, the easiest for patients is PPD with negative affectivity, which, however, does not mean that it can be considered as favourable from the standpoint of therapy and rehabilitation.
 CONCLUSION: PPD is detected in a significant number of patients with a first psychotic episode, even after excluding the group with pharmacogenic depression, both due to subjective complaints, nosogenic depressive experiences, and as a result of a psychometric assessment of the patients’ condition. The concept of “dissociated post-attack depression” is substantiated.

Multiple complications of wound infection of mixed etiology: clinical case

Purpose: to demonstrate a case of mixed purulent wound infection of the leg with the sequential development of multiple complications — phlegmon, staphylococcal infection with scarlet-like syndrome and the skin-articular form of Henoch-Schönlein hemorrhagic vasculitis in a 12-year-old child. Results. A severe, complicated form of purulent lesions of the skin and subcutaneous tissue is described — phlegmon of the lower leg, which arose as a result of infection of previously damaged tissues by the main causative agents of mixed wound infection — S. aureus and S. pyogenes in the IV degree of contamination. On the 7th day of the disease, the manifestation of an immune complex complication was noted — the skin-articular form of Henoch-Schönlein hemorrhagic vasculitis and symptoms of staphylococcal infection with scarlet-like syndrome, which required a differential diagnosis with wound (extrabucal) scarlet fever. Conclusion. The difficulties of differential diagnosis are shown. The delayed appearance of the rash on the 7th day of illness, pronounced hyperemia of the skin with a cyanotic tint around the wound, the formation of a large affected area, the appearance of peeling of the skin earlier than with scarlet fever — already against the background of a fading rash, allowed us to think about a staphylococcal infection with scarlet fever-like syndrome.

Differentiating Ischemic Optic Neuropathy from Glaucoma Using Diagnostic Tests.

Anterior ischemic optic neuropathy (AION) can mimic glaucoma and consequently cause difficulties in differential diagnosis. The purpose of this paper was to summarize differences in diagnostic tests that can help perform a correct diagnosis. The search strategy was performed according to the PRISMA 2009 guidelines, and four databases were used: MEDLINE, Embase, Web of Science, and Cochrane. Totally, 772 references were eligible; 39 were included after screening with respect to inclusion criteria that included English language and published in the 20 years before search date. Ninety percent (n = 35) of included studies used optical coherence tomography (OCT). Glaucomatous eyes had a significantly greater cup area, volume and depth, cup-to-disk ratio, a lower rim volume and area, and a thinner Bruch's membrane opening-minimum rim width. Retinal nerve fiber layer (RNFL) thinning in glaucomatous eyes occurred primarily at the superotemporal, inferotemporal, and inferonasal sectors, while AION eyes demonstrated mostly superonasal thinning. Glaucoma eyes showed greater macular ganglion cell layer thickness, except at the inferotemporal sector. OCT angiography measurements demonstrated a significant decrease in superficial and deep macular vessel density (VD) in glaucoma compared to AION with similar degree of visual field damage; the parapapillary choroidal VD was spared in AION eyes compared to glaucomatous eyes. By use of OCT imaging, optic nerve head parameters seem most informative to distinguish between glaucoma and AION. Although both diseases affect the RNFL thickness, it seems to do so in different sectors. Differences in structure and vascularity of the macula can also help in making the differential diagnosis.

Case report of leukoencephalopathy with predominant brainstem and spinal cord involvement and lactate elevation behind the mask of multiple sclerosis

Leukoencephalopathy with brainstem and spinal cord involvement and lactate elevation (LBSL) is a rare or underdiagnosed autosomal-recessive mitochondrial disease that sometimes mimics progressive multiple sclerosis (MS). Difficulties in diagnosing LBSL are due to the possibility of the onset of the disease in adulthood, and the nonspecific clinical picture in the form of slowly progressive neurological symptoms (pyramidal, cerebellar, sensory and cognitive impairments) without the involvement of other organs and systems characteristic of mitochondrial pathology. However, a notable feature of LBSL is its pathognomonic magnetic resonance imaging of the white matter of the brain and spinal cord, which allows a reliable diagnosis when certain criteria are met. Currently, there are no drugs registered for the specific treatment of LBSL, however, correct diagnosis is necessary to complete the epidemiological data, and to prevent the prescription of drugs with side effects that worsen the quality of life of patients. The number of clinical publications about LBSL is small, both in Russian and foreign publications, and therefore each identified case is of great interest. The article presents a brief review of the literature and a case report of a patient with the adult-onset LBSL, who received disease modifying therapy of multiple sclerosis for a long time. The patient’s main problems were progressive lower paraparesis and ataxia. To make clinicians more aware, we have reviewed the difficulties in differential diagnosis between LBSL and MS, we provided detailed medical history, neurological status, and magnetic resonance imaging findings.

A clinical case of piloleiomyoma

The article describes a clinical case of a benign tumor from smooth muscle cells - piloleiomyoma. The incidence of leiomyoma in the skin is 3-5% of all leiomyomas. A 27-year-old patient applied to a medical institution with complaints about an intradermal formation in the ear region that occurred repeatedly within 5 months after surgical treatment. After the first surgical intervention, the patient was consulted in various medical organizations, where the following diagnoses were made: «nodular fasciitis», «smooth muscle tumor without signs of malignancy» and «non-epithelial spindle cell neoplasm». According to ultrasound examination, the formation with dimensions of 11×9×5 mm reached the mastoid process of the temporal bone and was characterized by increased internal blood flow. After surgical removal of the neoplasm, taking into account the difficulties of differential diagnosis, an immunohistochemical study was conducted. An accumulation of smooth muscle cells was detected in the surface layers of the dermis under the epidermis by the immunohistochemical study with the use of the marker SMA. A study on CD34 protein revealed a high density of blood capillaries and the absence of its expression in smooth muscle cells. The proliferative index (Ki-67) and mitotic activity (PHH-3) of cells was also studied. The index of proliferative activity was less than 2%, mitoses were isolated. Thus, the results of immunohistochemical study proved the conclusion of piloleiomyoma.

A CASE SERIES OF INTRACARDIAC THROMBOSIS REVEALING BEHCETS DISEASE IN MOROCCAN PATIENTS

Aim of the work: The clinical presentation of Behcets disease (BD) is varied, While cardiovascular effects such as pericarditis, acute myocardial infarction, conduction disorders, and valvular disease have been reported, they are infrequent. The formation of intracardiac thrombus, as seen in our patients, is an exceptional occurrence. Patients and methods: We present a retrospective study of 4 cases of intracardiac thromboses in a series of 50 patients followed for BD in our department (over a period of four years), The diagnosis is made on the basis of the criteria proposed by the International Study Group (ISG). Results: All were male, the mean age at the time of the ICT diagnosis was 29.5 years. The main presenting symptoms were hemoptysis, chest pain, and dyspnea. It was associated with pulmonary artery aneurysm in two cases, and pulmonary embolism in all cases. In three cases, echocardiography was sufficient to reach the diagnosis but, in one, the difficulty of differential diagnosis with a cardiac tumor has been raised. The diagnosis has been confirmed by examining the operative specimen histologically in the case of this deceased patient, who experienced postoperative complications. Three patients were treated with immunosuppressant agents, corticosteroids, and anti-TNF alpha, one of whom showed a good response to treatment. Conclusion: A potential diagnosis of BD should be considered if a patient presents with an intracardiac mass, this is especially relevant in young male patients.

Acute myocarditis or apical balloon cardiomyopathy in a patient with systemic lupus erythematosus: The priority of common sense

Myocarditis can mimic takotsubo cardiomyopathy and via versa. We present a 70‐year‐old woman with known systemic lupus erythematous who presented to the emergency department twice during the last 2 years with chest pain, dyspnea and transient LV dysfunction. We also discuss the difficulties in differential diagnosis between lupus myocarditis and takotsubo cardiomyopathy.

Scleroderma: Difficulties in classification, diagnosis, treatment

Localized scleroderma (LoS) is an autoimmune connective tissue disease with a variety of clinical manifestations. The dermatologist faces the difficulties of establishing a diagnosis and choosing the most appropriate therapy due to the relatively rare prevalence. This review article explores the challenges of classification, diagnosis, and treatment, as well as the factors that contribute to their occurrence. The greatest difficulties in diagnosing LoS that affected the prognosis and progression of the illness are: a delay in diagnosis, including early detection; omission of the active stage of LoS; difficulties in differential diagnosis; lack of association with Lyme borreliosis; low diagnostic value of laboratory and histological tests; limited use of sensitive instrumental methods for diagnosis; and monitoring the activity of LoS in a doctor’s practice. The main difficulties in treatment are the delay in starting treatment; the use of therapy methods with low evidence-based effectiveness; the rare prescription of highly effective approaches; the insufficient effectiveness of systemic drugs and phototherapy; difficulties in determining the volume, timing, and regimen of therapy for each subtype of LoS; the difficulty of achieving a remission; dependence of treatment approach on the doctor’s specialization; the lack of targeted drugs with evidence-based effectiveness in LoS; the lack of high-level evidence-based effectiveness and safety of therapy in LoS; difficulties in the correction of complications of Lo S.

Mucinous Cystadenoma of the Cystic Duct

A rare clinical observation of a cystic formation of the biliary system — mucinous cystadenoma of the cystic duct is presented. This type of tumors is benign, but in 20 % of cases their malignancy is described. They are often detected incidentally during routine examination and require surgical treatment, regardless of clinical manifestations. Difficulties in differential diagnosis led to unreasonably long follow-up, ending with malignancy of cystadenomas, which reduces the possibility of radical surgical treatment. Therefore, timely detection and differentiation of biliary mucinous cystadenomas by examination are very important for treatment strategy.

Precise diagnosis of breast phyllodes tumors using Raman spectroscopy: Biochemical fingerprint, tumor metabolism and possible mechanism

BackgroundBreast fibroadenomas and phyllodes tumors are both fibroepithelial tumors with comparable histological characteristics. However, rapid and precise differential diagnosis is a tough point in clinical pathology. Given the tendency of phyllodes tumors to recur, the difficulty in differential diagnosis with fibroadenomas leads to the difficulty in optimal management for these patients. MethodIn this study, we used Raman spectroscopy to differentiate phyllodes tumors from breast fibroadenomas based on the biochemical and metabolic composition and develop a classification model. The model was validated by 5-fold cross-validation in the training set and tested in an independent test set. The potential metabolic differences between the two types of tumors observed in Raman spectroscopy were confirmed by targeted metabolomic analysis using liquid chromatography-tandem mass spectrometry (LC-MS/MS). ResultsA total of 204 patients with formalin-fixed paraffin-embedded (FFPE) tissue samples, including 100 fibroadenomas and 104 phyllodes tumors were recruited from April 2014 to August 2021. All patients were randomly divided into the training cohort (n = 153) and the test cohort (n = 51). The Raman classification model could differentiate phyllodes tumor versus fibroadenoma with cross-validation accuracy, sensitivity, precision, and area under curve (AUC) of 85.58 % ± 1.77 %, 83.82 % ± 1.01 %, 87.65 % ± 4.22 %, and 93.18 % ± 1.98 %, respectively. When tested in the independent test set, it performed well with the test accuracy, sensitivity, specificity, and AUC of 83.50 %, 86.54 %, 80.39 %, and 90.71 %. Furthermore, the AUC was significantly higher for the Raman model than that for ultrasound (P = 0.0017) and frozen section diagnosis (P < 0.0001). When it came to much more difficult diagnosis between fibroadenoma and benign or small-size phyllodes tumor for pathological examination, the Raman model was capable of differentiating with AUC up to 97.45 % and 95.61 %, respectively. On the other hand, targeted metabolomic analysis, based on fresh-frozen tissue samples, confirmed the differential metabolites (including thymine, dihydrothymine, trans-4-hydroxy-l-proline, etc.) identified from Raman spectra between phyllodes tumor and fibroadenoma. Significance and noveltyIn this study, we obtained the molecular information map of breast phyllodes tumors provided by Raman spectroscopy for the first time. We identified a novel Raman fingerprint signature with the potential to precisely characterize and distinguish phyllodes tumors from fibroadenoma as a quick and accurate diagnostic tool. Raman spectroscopy is expected to further guide the precise diagnosis and optimal treatment of breast fibroepithelial tumors in the future.

Biliary gastritis. Pathomorphological features and differential diagnosis

The review article discusses the modern pathogenetic links of biliary gastritis, namely the role of endothelial dysfunction, intestinal metaplasia in inflammation and the influence of Helicobacter pylori infection. The problem of combined damage to the mucous membrane of HP-associated and biliary gastritis remains relevant, since modern foreign studies have not come to a consensus, but most authors state increased carcinogenesis of the stomach with a positive HP status against the background of the course of pathological duodenogastric reflux. The article also presents original materials of histological examination of biliary, HP-associated, autoimmune and hyperplastic gastritis with similar morphological features, thereby demonstrating the difficulties of differential diagnosis.

Ayurved Management of Amyotrophic Lateral Sclerosis (Motor Neuron Disease)

Motor neurons are nerve cells that send electrical output signals to the muscles, affecting the muscles’ ability to function. Motor neuron disease (MND) can appear at any age, but the symptoms usually appear after the age of 50 years. It affects more males than females. The most common type of MND is amyotrophic lateral sclerosis (ALS). A 56-year-old male patient had heaviness and weakness in left lower limb for 4 months. The condition rapidly progressed in the 4 months prior and found difficulty in climbing stairs and swelling in the left foot. Gradually he developed slowness of speech hence consulted allopathic hospital and treated with glutamate blockers, muscle relaxant and physiotherapy. His response to allopathic medications found to be slow. The present case report deals with the case of MND and its Ayurvedic diagnosis and management. Difficulty in differential diagnosis exists between the conditions like Sarvanga Vata, Avrita Vata and Saama Vata. Upashaya- Anupashaya Pariksha is beneficial to solve the problem in differential diagnosis. Swedana and Matra Vasti procedures are found to be beneficial in the management of MND.

Preconditions for radiomics-based approach in differential diagnosis of pancreatic cystic lesions: critical evaluation of meta-analyses and international guidelines

INTRODUCTION: Pancreatic cystic lesions (PCLs) are a heterogenous group of lesions ranging from benign to malignant with variable histological, pathomorphological and prognostic characteristics. The development and improvement of radiation methods provides a great opportunity to diagnose such neoplasms. However, there are still difficulties in differential diagnosis and prediction malignant potential in pancreatic cyst subtypes due to their similar radiation characteristics.OBJECTIVE: To determine the diagnostic performane and difficulties of differentiating PCLs by invasive and non-invasive radiological methods. To determine the preconditions for radiomics-based approach in differential diagnosis of pancreatic cystic lesions based on a review and analysis of international guidelines.MATERIALS AND METHODS: We searched for scientific publications in the PubMed and Springer information and analytical systems for 2009–2023 by keywords: «pancreatic tumors», «pancreatic cyst», «pancreatic cystic lesion», «pancreatic radiomics», «intraductal papillary mucinous neoplasm», «pancreatic cystadenoma». As a result, 49 articles were selected for analysis.RESULTS: Despite the high potential of modern non-invasive radiation methods in the detection of pancreatic cysts, differentiation of PCLs subtypes is still very difficult. Due to the variability of international guidelines and a lack of their specificity, there is no universal consensus for management PCLs. In this regard, introduction new alternative diagnostic methods and markers is an important direction of research. At the moment, the assessment of the malignant potential of PCLs is comes down to only two main signs — the main pancreatic duct diameter and the vascularized solid component.CONCLUSION: Currently, common semiotic features, limitations of invasive diagnostic methods and increasing risks of recurrence and malignancy dictate the need to apply new diagnostic approaches to evaluation of PCLs. Searching and introduction new markers will allow us to analyze the lesion structure, to stratify risks and long-term prognosis more accurately. Textural image analysis is a new and promising noninvasive method with high power. This tool plays an important role to estimate those structural parameters which are impossible to judge according to the standard radiologic features, and to offset the problems of traditional diagnostic approach.