[Two sisters with Laurence Bardet-Biedl-Moon syndrome and concomittant carcinoma of the body of the uterus (author's transl)].

Two sisters with Laurence-Bardet-Biedl-Moon syndrome were observed. This consists of mental retardation, pigmented retinopathy, polydactyly, obesity and hypogenitalism. Both had carcinoma of the endometrium shortly after age 40. The question is raised whether factors in this syndrome predispose to carcinoma of the endometrium.