A Case of Benign Phyllodes Tumor in a Transgender Woman Receiving Cross-Sex Hormones.

Phyllodes tumor is a relatively uncommon fibroepithelial neoplasm of the breast characterized by proliferation of both stromal and epithelial elements. Benign phyllodes tumors are distinguished from fibroadenomas by their prominent leaf-like architecture and exaggerated intracanalicular stromal growth pattern. Typically, these lesions affect older natal females; however, we present what we believe is the first reported case of benign phyllodes tumor in a hormonally treated transgender woman.

Mucinous tubular and spindle cell carcinoma of the kidney with prominent papillary component, a non-classic morphologic variant. A histologic, immunohistochemical, electron microscopic and fluorescence in situ hybridization study.

Mucinous tubular and spindle cell carcinoma (MTSCC) is a rare type of kidney tumor with relatively indolent behavior. Non-classic morphological variants have not been well studied and rarely been reported. We report a challenging case MTSCC with a peculiar morphology in a 42-year-old man, arising in a background of end-stage renal disease (ESRD).