The s.c. 'hairy polyp' or 'dermoid' of the nasopharynx. (An unusual observation in older age)

A case of 'hairy polyp' or 'dermoid' of the nasopharynx in a 71-year-old man is described. This tumor-like condition is usually discovered at birth or during the first years of life. The oldest patient previously recorded in the literature was a 66-year-old man. The occurrence of such masses in older patients suggests that the condition is a malformation and not a neoplasm.

Inverted papilloma of the ureter

The inverted urothelial papilloma described herein is the fourth case developing in the ureter. The association with a well-differentiated conventional papilloma of the renal pelvis is the noteworthy feature of this case.

APUD cells in normal and hyperplastic prostates

Argyrophilia and argentaffinity, as basic properties of APUD cells, were investigated in 50 normal and hyperplastic prostates, which included both autopsy and surgical specimens from patients of various ages. Normal prostates (including glands from 3 foetuses) had 62% of argyrophil-positive granules in the glandular epithelia, while only 44% of the hyperplastic glands were positive. Argentaffin-positive cells were found in 12% of the surgical hyperplastic cases. Both argyrophil and argentaffin cells were distributed in zones, often in lobule-like shapes, lying along the basal membrane. On the basis of these findings, there is a discussion on the possible roles played by the so-called APUD cells in hyperplastic and neoplastic growths of the prostate, such as carcinoid tumours (apudomas) or endocrine-associated syndromes in the course of prostatic cancer.