title: Sexual precocity and thoracic polyembryoma: Klinefelter syndrome?
mesh_terms: D002648:Child; D006801:Humans; D007713:Klinefelter Syndrome / Q000150:complications*; D008297:Male; D011629:Puberty, Precocious / Q000209:etiology*; D013724:Teratoma / Q000150:complications*; D013899:Thoracic Neoplasms / Q000150:complications*