bromochloroacetic-acid and Adenoma--Villous

The presence of colonic-type epithelium in the urinary tract is not an uncommon occurrence, but tumors derived from it are rare. Tumors arising from colonic-type epithelium, including villous adenoma and adenocarcinoma, have been reported in the renal pelvis, ureter, urinary bladder, and urethra. Villous adenomas of the urinary tract are rare, being most common in the urinary bladder, followed by the urethra. Morphologic features of these tumors are similar to those of the colonic adenomas. The largest published series of villous adenomas of the urinary tract was a study of 23 patients. This study is reviewed and other reports on villous adenomas of the urinary tract are discussed.

Topics: Adenocarcinoma; Adenoma, Villous; Aged; Aged, 80 and over; Biomarkers; Carcinoembryonic Antigen; Humans; Immunohistochemistry; Intermediate Filament Proteins; Keratin-20; Keratin-7; Keratins; Mucin-1; Neoplasms, Multiple Primary; Urologic Neoplasms

A case of papillary tubular adenoma is reported. On microscopic examination the lesion, located on the scalp, showed a tubular-branching pattern, opening on the skin surface, and features of decapitation secretion. Immunohistochemical evidence of both eccrine and apocrine differentiation was found. This case, which on a clinicopathological basis alone could be classified as tubular apocrine adenoma, illustrates the difficulties in contrasting the latter to its eccrine counterpart (papillary eccrine adenoma) and suggests that the terms papillary tubular adenoma or tubulopapillary hidradenoma more accurately describe these lesions.

Topics: Adenoma; Adenoma, Sweat Gland; Adenoma, Villous; Adult; Antigens, Neoplasm; Apocrine Glands; Carcinoembryonic Antigen; Cell Differentiation; Diagnosis, Differential; Eccrine Glands; Female; Humans; Immunohistochemistry; Immunophenotyping; Keratins; Mucin-1; Neoplasm Proteins; Scalp; Skin Neoplasms; Sweat Gland Neoplasms