Flares of Confusion: A Case Report of Uterine Leiomyoma and Angiomatosis Complexity on Imaging.

Over the past decade, a series of rare and extraordinary uterine tumors have been discovered, with some featuring exceptionally uncommon tumor types. This highlights the growing recognition of these rare tumors due to evolutionary radiologic advancements. However, evaluating these patients requires adequate understanding to avoid misinterpretation and potential confusion with alternative differential diagnoses. This case is the first documented instance of two coexistent uterine benign tumors in a 45-year-old unmarried female patient. The patient's medical, gynecological, and surgical histories were unremarkable. Conventional abdominopelvic imaging via computed tomography (CT) and magnetic resonance imaging (MRI) revealed significant uterine expansion, indicating an atypical leiomyomatous or potentially leiomyosarcomatous mass. Subsequently, [18F]fluorodeoxyglucose ([18F]FDG) positron emission tomography (PET)/CT revealed hypermetabolic uterine enlargement, suggesting further evaluation. The patient underwent radical hysterectomy, and histopathological analysis revealed multiple uterine fibroids concurrently existing against the uterine angiomatosis. This case is the first documented instance of intricate pathological interplay within the uterus.