Objective The aim of the study was to characterize magnetic resonance imaging findings in patients with recurrent ovarian adult granulosa cell tumors (AGCTs). Methods Clinical and magnetic resonance imaging manifestations of recurrent AGCTs were evaluated in 11 patients. Results Initial recurrences of AGCT were diagnosed between 13 months and 30 years (mean, 11.3 years). Recurrent tumors were located in the pelvic peritoneum, the abdominal peritoneum, the retroperitoneum, and bone. The number of recurrent tumors varied from 1 to 5. Tumors varied in morphology and all margins were well circumscribed. The internal structures noted were as follows: multilocular cystic and solid and cystic. Furthermore, internal hemorrhage and sponge-like multicystic components were identified. Conclusions Ovarian AGCTs recurred in the pelvic peritoneum, abdominal peritoneum, and the retroperitoneal lymph nodes. Large recurrent AGCTs were commonly well circumscribed, round or lobulated, and multilocular cystic or solid and cystic. Moreover, they frequently included internal hemorrhage and sponge-like multicystic components.

Acute cholecystitis is a common surgical emergency, for which ultrasound (US) is the most common first-line diagnostic imaging test. Computed tomography (CT) is an alternative or complementary test for the assessment of acute cholecystitis. Acute cholecystitis is diagnosed based on clinical history and assessment, biochemical examination, and US findings. CT is considered only in case of unclear clinical symptoms or discrepant findings. We aimed to retrospectively compare the efficiency of CT and sonography for the diagnosis of acute cholecystitis in 103 patients who underwent laparoscopic cholecystectomy for acute cholecystitis during 2009-2018. The sensitivity and specificity of US and CT were comparatively analyzed on the basis of the intraoperative findings and histological outcomes. All patients underwent US and CT, of which 60 were diagnosed with acute cholecystitis based on histopathology. US and CT demonstrated 100% and 100% specificity, 77% and 77% negative predictive value (NPV), and 72% and 85% sensitivity for the diagnosis of acute cholecystitis, respectively. Thus, CT revealed a higher degree of sensitivity for acute cholecystitis diagnosis. However, US remain the first choice of test for diagnosis.