Aspiration biopsy cytology of the prostate in young adult men.

The aspiration biopsy cytology of 11 prostates obtained at autopsy from men younger than 40 yr old were studied to define the cytologic criteria of benign changes in this age group. Cytologic features that differ from those of older men with benign prostatic enlargement include abundant cellularity, the presence of large and small cell groups (which would otherwise suggest dyshesion), and a predominantly columnar cell shape. These differences can be attributed to age-related changes in the prostate.

Postirradiation malignant fibrous histiocytoma of the trachea.

A 77-yr-old woman presented with a malignant fibrous histiocytoma (MFH) of the trachea 11 yr after right subtotal thyroidectomy and delivery of 5,400 rads to the neck for infiltrating papillary thyroid carcinoma. The tumor developed in the irradiated area. Postirradiation MFH tends to occur in subcutaneous tissues, and is rare in lung parenchyma or airways.

Apocrine adenoma of the breast.

Apocrine adenoma of the breast is a very rare entity. Criteria for diagnosis include qualification as adenoma and differentiation from apocrine carcinoma.