Multimodal imaging findings of sarcomatoid carcinoma of the urinary bladder.

Sarcomatoid carcinoma, a rare and aggressive subtype of bladder cancer, accounting for 0.3% of cases, is more aggressive than urothelial carcinomas. Accurate diagnosis, crucial for treatment, can be challenging.

Imaging findings of succinate dehydrogenase-deficient renal cell carcinoma.

Key Clinical Message: A 50-year-old man with a mass located in the left kidney was described by multimodal images, including ultrasonography, computed tomography, and magnetic resonance imaging. After surgical resection of the mass, pathological examination confirmed succinate dehydrogenase-deficient renal cell carcinoma.

Abstract: Succinate dehydrogenase-deficient renal cell carcinoma (SDH-deficient RCC) is a malignant tumor in the kidney associated with the loss of mitochondrial enzyme II.

Imaging findings of superficial angiomyxoma in the eye socket.

Key Clinical Message: A 23-year-old male with a tumor in the eye socket was characterized by multimodal images, including ultrasonography, computed tomography, and magnetic resonance imaging. After admission, surgical resection of the tumor was performed and superficial angiomyxoma was confirmed. Two years later, this tumor recurred in the same location.

Imaging manifestations of small cell neuroendocrine carcinoma of the ureter.

Small cell neuroendocrine carcinoma (SCNEC) of the ureter is a rare malignant tumor originating from the metaplasia of urothelial cells. This report presents a case of ureteral SCNEC that was preliminarily disclosed by computed tomography; thereafter, transabdominal ultrasonography, transrectal ultrasonography, and magnetic resonance urography were performed to characterize the mass.

Imaging findings of the primary mucoepidermoid carcinoma of the breast.

Mucoepidermoid carcinoma (MEC) is an invasive tumor that has been reported in many organs, such as the salivary glands, lungs, esophagus, and thymus; however, it rarely affects the breast. Here, we report a case of primary breast MEC with imaging, including mammography, ultrasonography, and magnetic resonance imaging.