Beaver Tail Liver: A Hepatic Morphology Variant.

Beaver tail liver, or else known as the sliver of liver, is a rare anatomic variation of the liver where the left lobe of the liver extends laterally to contact and enwrap the spleen. A case is presented here where a middle-aged male presented with complaints of abdominal pain, hematuria, and fever. After the routine blood and urine examinations revealed urinary tract infection, CT abdomen was done to find out the etiology, and beaver tail liver was found incidentally with the left lobe of liver encircling the spleen. Sometimes it may be difficult to differentiate liver and spleen from each other when echogenicity or density on USG and CT are equivalent. More common in females, it may imitate a splenic trauma or a subcapsular hematoma, or a perisplenic hemorrhage within the splenic parenchyma.

A Comparative Assessment Between High-resolution Ultrasonography and Field Magnetic Resonance Imaging in Supraspinatus Tear Cases and Its Arthroscopic Correlation.

Background Diagnosis of a supraspinatus tear in patients presenting with shoulder pain is a difficult task and often requires the help of an MRI. However, in recent years, high-resolution ultrasonography (USG) has been utilized as a cheaper yet sensitive alternative. The aim of the study is to provide a comparative assessment of supraspinatus tears between USG and MRI in relation to arthroscopic results. Methods A total of 60 patients with shoulder pain for the last three months or more scheduled to undergo arthroscopic surgery for their shoulder disorder were enrolled; those having any congenital deformity of the shoulder or having any contradiction to an MRI were excluded from the assessment. All the patients underwent high-resolution ultrasonography (HRUSG) and MRI evaluation. Both the USG and MRI findings were correlated with the arthroscopic findings. Results On ultrasonography, 34 (56.67%) full-thickness tears and 22 (36.67%) partial-thickness tears of the supraspinatus were detected. On MRI, 36 (60.0%) were diagnosed as a full-thickness tear and 20 (33.33%) as a partial-thickness tear. After arthroscopy, 36 (60.00%) were confirmed as a full-thickness tear and 20 (33.33%) as a partial-thickness tear of the supraspinatus. For a full-thickness tear, the sensitivity and specificity of USG and MRI were 95.0% and 92.5%, and 85% and 92.5%, respectively. For a full-thickness tear, the sensitivity and specificity of the modalities were 94.4% and 100%, respectively. Conclusion HRUSG and MRI both had high comparable accuracy for detection of a supraspinatus tear, however, HRUSG had an edge over MRI in the detection of a partial tear.