Digital mucous cysts encompass two pathogenetically distinct entities, the cutaneous myxomatous type and ganglion type. We describe an 8-year-old boy with a digital mucous cyst on the ventral side of the proximal phalanx of the right fifth finger. The case shows characteristic histopathological findings, but in an unusual location. (Korean J Dermatol 1999;37(1) : 111-112)