Asymmetric ovarian enlargement in idiopathic precocious puberty.

A patient with precocious puberty is presented in whom the pneumogynogram showed only one enlarged ovary. Because tumor could not be excluded, the patient had exploratory operation six weeks later. Both ovaries and the uterus were enlarged, compatible with the central stimulation seen in idiopathic precocious puberty. Care should be used in interpreting pneumogynograms as evidence of possible ovarian tumor in young girls with precocious puberty who have only modest unilateral ovarian enlargement.