PP 116. Benign Mestasizing Leiomyoma: 3 Fairly Different CT Findings

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H. Ishibashi, M. Hirose, S. Ohta

17:36 - 17:42h at Margrit Room

Categories: Poster Session , Thoracic Surgery

Session: Poster II (P3) - Emergency / Thoracic Surgery

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Background
Benign metastasizing leiomyoma (BML) is a rare entity with approximately 100 cases reported in the literature. However, only scattered case reports describe chest radiographic and computed tomography (CT) findings in the lungs. The purpose of our study was to present 3 BML cases with fairly different cases of chest radiographic and CT findings.

Material and Methods
Three cases of pathologically proven BML were retrospectively reviewed. Chest radiographs and CT scans were evaluated to determine lesion size, distribution, and number. In all patients, the diagnosis was based on the results of lung biopsy via a surgical procedure.

Result
Case 1: A 46- year- old woman had undergone myomectomy for a uterine leiomyoma at the age of 32. The CT finding was "multiple small nodules type," with three 5-mm nodules in both lungs. Case 2: A 50- year- old woman had undergone myomectomy for a uterine leiomyoma at the age of 36. Positron emission tomography- CT during a health screening program showed numerous multiple nodules in both lungs. The CT finding was "numerous tumors type," with more than 100 nodules in both lungs. Case 3: A 47- year- old woman, who had undergone hysterectomy with oophorectomy for a uterine leiomyoma at the age of 27. Chest radiography showed a right-sided moving mass, and the CT finding was a partial "atelectasis type" tumor, arising from the right middle lobe just like a "tongue". The tumor was surgically resected.

Conclusion
We presented 3 fairly different CT findings of BML.