Usefulness Of Ultrasonography In Diagnosis Research Articles

Chiari‐like malformation and syringomyelia in normal cavalier King Charles spaniels: a multiple diagnostic imaging approach

The objectives of the study were (1) to report the incidence of Chiari-like malformation and syringomyelia in a normal French cavalier King Charles spaniel breeding population; (2) to precise the standard computed tomography dimensions of the caudal fossa and (3) to investigate the use of ultrasonography in diagnosis of this syndrome. Clinically normal adult cavalier King Charles spaniel underwent ultrasonographic examination of the spinal cord and caudal fossa. Computed tomography was used to measure the caudal fossa and magnetic resonance imaging allowed syringomyelia and cerebellar herniation identification. Of the 16 dogs in the study, seven had syringomyelia (43.7 per cent). All dogs had cerebellar herniation, suggesting Chiari-like malformation and also a tendency to occipital dysplasia. Computed tomography measurements of the caudal fossa are reported. In one dog, a syrinx was identified by ultrasonography. The only difference between dogs with or without syringomyelia was that dogs with Chiari-like malformation/syringomyelia were statistically older. The incidence of Chiari-like malformation and syringomyelia may be high in an asymptomatic population of cavalier King Charles spaniel . Computed tomography measurements reported in this study should now be compared with those of a symptomatic population to evaluate the hypothesis that dogs with Chiari-like malformation/syringomyelia syndrome have a smaller caudal fossa. This study did not identify a smaller caudal fossa in an asymptomatic cavalier King Charles spaniel population with syringomyelia. Ultrasonography probably has a low sensitivity for diagnosis of Chiari-like malformation/syringomyelia.

Usefulness of Ultrasonography for Diagnosis of Malignant Lymphoma of the Thyroid

Usefulness of Ultrasonography for Diagnosis of Malignant Lymphoma of the Thyroid

Developmental Dysplasia of the Hip: Quality of Reporting of Diagnostic Accuracy for US

To systematically review the quality of diagnostic accuracy reporting in studies on the use of ultrasonography (US) for the diagnosis of developmental dysplasia of the hip (DDH). A systematic review of the MEDLINE, EMBASE, DARE, and Cochrane Library databases was performed by using a validated search strategy. Two independent reviewers evaluated articles by using the Standards for Reporting of Diagnostic Accuracy (STARD) and Quality Assessment of Studies of Diagnostic Accuracy included in Systematic Reviews (QUADAS) statements. Items were reported individually for STARD and QUADAS because these instruments do not incorporate a summary score. A simple kappa statistic with 95% confidence intervals was used to measure the level of agreement between the two reviewers. Ten studies were included. In three studies, reliability was investigated, and in seven studies elements of both validity and reliability were investigated. In no study did the authors adequately report more than 40% of the STARD items. The quality of methods that were used in the studies was poor. Only one (14%) of seven studies provided information on more than 50% of the QUADAS items. All studies included a good description of image acquisition, but data analysis was imperfect and lacked estimates of diagnostic accuracy and precision. Authors tended to overinterpret their results. Overall, there was imperfect reporting of diagnostic accuracy in studies on the use of US for diagnosis of DDH.

Usefulness of Ultrasonography for Diagnosis of Malignant Lymphoma of the Thyroid

Recent developments in ultrasonography (US) and the prevalence of ultrasound-guided fine needle aspiration biopsy (US-FNAB) has enabled physicians to detect and diagnosis thyroid diseases, including thyroid malignant lymphoma, much more easily. We describe our diagnostic strategy for malignant lymphoma on US screening. We screened possible malignant lymphoma patients by US characteristics such as enhanced posterior echoes. Among 170 patients suspected of malignant lymphoma between 2000 and 2004, 74 (43.5%) were also diagnosed as having or suspected of lymphoma by US-FNAB. Five patients dropped out, and 67 of 69 patients who underwent surgical examination were pathologically diagnosed as having lymphoma. Finally, 79 (47.9%) of 165 US-suspected patients were confirmed as having lymphoma. Only 21.5% of lymphoma patients complained of rapidly growing goiter. US screening for goiters contributes markedly to diagnosis of lymphoma at an early phase, facilitating early initiation of therapy.

Arthroscopic Verification of Ultrasonographic Diagnosis of Meniscal Pathology in Dogs

To determine the clinical usefulness of ultrasonography for diagnosis of meniscal pathology in dogs. Double-blind prospective study. Dogs (n=10) with lameness localized to the stifle. Sonographic examination of each affected stifle was performed by 1 ultrasonographer unaware of specific historical and clinical data for the dog. Sonographic findings were recorded, but not reviewed until study completion. Arthroscopic examination of the affected stifle was performed within 48 hours of ultrasonography by 1 surgeon unaware of ultrasonographic findings. Arthroscopic findings were recorded, but not reviewed until study completion. Two investigators compared the ultrasonographic and arthroscopic findings at study completion to determine the sensitivity, specificity, positive predictive value, and negative predictive value. Two of the 10 dogs had bilateral stifle evaluation. Twenty-four lateral and medial menisci, with normal and abnormal findings, were examined. The sensitivity and specificity for ultrasonographic diagnosis were 90.0% and 92.9%, respectively; positive and negative predictive values were 90.0% and 92.9%, respectively. Ultrasonography is highly specific and sensitive for diagnosing bucket handle tears of the medial meniscus in dogs. Ultrasonographic evaluation of menisci in dogs is a noninvasive method for accurately and efficiently diagnosing pathology, determining the need for surgical intervention, and providing comprehensive information to clients.

6957 Evaluation of usefulness of endoscopic ultrasonography for diagnosis of villous tumors.

Background: Villous tumors are potentially or substantially malignant lesions. A detailed examination of this tumor is important for determining therapeutic strategy. We used to frequently observe a peculiar finding in villous tumors during endoscopic ultrasonography (EUS). The study of villous tumor based on EUS is not enough performed, although reports of usefulness of EUS for pretherapeutic staging of colorectal cancer have increased. Aim of this study is to clarify the characteristics of EUS findings of villous tumors. Methods: We performed EUS for 52 lesions histologically diagnosed as mucosal lesion (adenoma and intramucosal cancer) or submucosal cancer at Showa University Hospital from 1993 to 1999. The instrument used for EUS is the CF-UM200 with a 7.5 MHz radial-scan transducer (Olympus Optical Co.Ltd., Tokyo, Japan). These lesions were histologically classified into three categories: non-villous type; 24 cases (less than 25% of villous component), tubulovillous type; 21 cases (25-75% of villous component) and villous type; 7 cases (more than 75% of villous component). In this study, both tubulovillous type and villous type were defined as villous tumor. We compared EUS findings with histologic findings of the lesions. Results: By EUS, the non-villous tumor was demonstrated as a hypoechoic mass and its echo level was intermediate between the third hyperechoic layer and the fourth hypoechoic layer of colorectal wall. The echo-pattern of villous tumor contained multiple cystic area. The incidence of this echo-pattern was significantly different between villous tumors (18/28; 64%) and non-villous tumors (5/24; 21%)(p=0.0211). In the further investigation, cystic area was diffusely distributed in 7/7 (100%) of villous type and 5/21 (24%) of tubulovillous type (p=0.0007). But, there was no diffuse distribution in non-villous type. The depth of invasion was correctly determined by EUS as follows: mucosal lesion; 58% of villous tumors and 80% of non-villous tumors, submucosal cancers; 50% of villous tumors and 78% of non-villous tumors, respectively. Conclusions: EUS is useful for the diagnosis of villous tumors, however it is difficult to determine the depth of invasion of villous tumor by only EUS.

P-242 Usefulness of laparoscopic ultrasonography for diagnosis of hepatocellular carcinoma

P-242 Usefulness of laparoscopic ultrasonography for diagnosis of hepatocellular carcinoma

Use of Ultrasonography for Diagnosis of Aortic Dissection

Use of Ultrasonography for Diagnosis of Aortic Dissection