“…As might be expected in a multicystic lesion, marsupialization almost invariably leads to recurrence (Piper and others, 1962;Becker, 1969, whilst biopsy or partial excision results in fistula formation (Murray and Spier, 1961). Total excision of a cystadenoma usually presents no special difficulty, whilst even an early cystadenocarcinoma may be completely removed as it is often encapsulated (Ayella, Howard, v d Grotzinger, 1962) and may be only locally invasive (Campbell and Cruikshank, 1962).…”