Large uterine juvenile cystic adenomyoma in an adolescent

Abstract

Juvenile cystic adenomyoma (JCA) is a rare uterine pathology with <40 cases reported in the current literature since 1996 when Tamura described it. We report a 13-year-old girl with a history of chronic pelvic pain and dysmenorrhea for 12 months. After diagnostic evaluation and identification of the cystic structure (∼6 cm) within the myometrium, fertility-sparing surgery was successfully performed. Histopathological examination of the uterine cyst was consistent with the diagnosis of JCA. The postoperative course was uneventful, and the patient was disease-free three years after surgery. JCA is a rare condition but should be considered in the differential diagnosis in adolescents with moderate to severe dysmenorrhea. Despite diagnostic advances, the awareness of the disorder remains low. Thus, our case report aims to increase awareness of this rare pathology with unclear etiology. • Juvenile cystic adenomyoma (JCA) is a rare uterine pathology with <40 reported cases. • We report a 13-year-old girl with a 12-months history of dysmenorrhea. • Surgery revealed a 6 cm mass, histopathologically confirmed as a JCA. • JCA is a rare condition but should be considered in the differential diagnosis in adolescents with dysmenorrhea.