Synchronous carcinosarcoma of the lower ureter and renal pelvis with heterologous chondrosarcomatous elements: An unusual case report.

Carcinosarcoma of the ureter is a rare biphasic neoplasm, with distinct malignant epithelial and mesenchymal components. The mesenchymal component may show heterologous chondrosarcomatous or osteosarcomatous elements. To the best of our knowledge, there have been only 13 cases reported in the literature.

Two uncommon cases of uterine leiomyosarcomas displaying heterologous osteosarcomatous de-differentiation.

Uterine leiomyosarcomas uncommonly arise on a background of leiomyomas. Still rare is osteosarcomatous dedifferentiation in such tumors. A 60-year-old female presented with abdominal pain and underwent radiological imaging that disclosed a large, well-defined, heterogeneously enhancing uterine tumor.

Squamous carcinoma coexistent with teratoma of ovary: a clinicopathological study of 12 cases diagnosed over a 10-year period at a tertiary cancer referral center.

Background: Somatic malignancy in an ovarian teratoma including a squamous carcinoma (SCC) is rare. Clinicopathological features of 12 ovarian teratomas with coexistent SCCs are presented.

Materials And Methods: Over a 10-year-period, 12 ovarian teratomas with coexistent SCCs were reviewed and analyzed.

Intradural spinal granular cell tumor.

Granular cell tumor is a rare, usually benign tumor with classical histomorphology. Location of tumor varies widely within body, but spine is distinctly a rare location for this tumor. We report a rare case of granular cell tumor involving intradural extramedullary portion of lumbar region of spinal cord.