Answer

From question on page 1000

During menses, colonoscopy showed a large multilobulate polyp (3.5 cm in diameter) of the sigmoid colon with a hyperaemic and friable mucosa (fig 1). Histological examination showed a normal mucosa with the presence of some branched crypts and marked inflammation in the lamina propria.

During the intermenstrual period (on the eighth day of the cycle), polyp size had decreased; its surface appeared only slightly lobulate without friability and with hyperaemia, which was reduced at two red spots …