Zazulak Hannah E, Single Meghan, O'Herron Timothy, Thompson Joel P
College of Osteopathic Medicine, University of New England, Biddeford, Maine, United States.
Department of Diagnostic Imaging, Rochester General Hospital, Rochester, New York, United States.
J Clin Imaging Sci. 2023 Jun 7;13:16. doi: 10.25259/JCIS_37_2023. eCollection 2023.
Benign metastasizing leiomyoma (BML) is a rare finding of histologically benign smooth muscle tumors in extrauterine locations, most commonly the lungs. We report a case of BML found incidentally on pre-operative imaging in a 42-year-old patient. BML is found in premenopausal women with a history of leiomyoma and, often, hysterectomy. As in our case, the metastatic pulmonary nodules are not hypermetabolic on 18F-fluorodeoxyglucose Positron emission tomography/computed tomography. BML may be clinically malignant or asymptomatic. Since the imaging appearance of BML simulates metastatic disease of more malignant etiology, awareness of its multimodality imaging appearance and presentation can aid in diagnosis.
良性转移性平滑肌瘤（BML）是一种在子宫外部位发现的组织学上为良性的平滑肌肿瘤，最常见于肺部。我们报告一例42岁患者在术前影像学检查中偶然发现的BML病例。BML见于有平滑肌瘤病史且常行子宫切除术的绝经前女性。如我们的病例所示，18F-氟脱氧葡萄糖正电子发射断层扫描/计算机断层扫描显示转移至肺部的结节并非高代谢。BML可能临床上有恶性表现或无症状。由于BML的影像学表现类似更具恶性病因的转移性疾病，了解其多模态影像学表现和特征有助于诊断。
