Abstract.
We report a rare case of undifferentiated leiomyosarcoma (LMS) with incidental B-cell lymphoma in a 70-year-old woman. T2-weighted magnetic resonance images revealed a high signal intensity mass measuring 9 × 8 cm in the gluteus muscle. The pathological diagnosis of repeated surgery was undifferentiated LMS that included various sarcomatous components, such as fibrosarcomatous, rhabdomyosarcomatous, and malignant fibrous histiocytoma-like elements. A specimen from a supraclavicular lymph node showed the characteristics of malignant B-cell lymphoma (follicle type). Adjuvant chemotherapy or radiation therapy was not performed because of the patient's advanced age. The patient died from liver metastasis and dysfunction 5 years 8 months after the initial therapy. This is a rare case of LMS with malignant lymphoma. Considerable debate remains whether the B-cell lymphoma developed incidentally.
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Received: January 7, 2002 / Accepted: June 25, 2002
Acknowledgment. The authors thank Kimberly Christian for expert secretarial service (Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, USA).
Offprint requests to: M. Kanamori
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Kanamori, M., Ohmori, K., Nogami, S. et al. Undifferentiated leiomyosarcoma showing various sarcomatous components with incidental B-cell lymphoma after tumor recurrence. J Orthop Sci 7, 698–702 (2002). https://doi.org/10.1007/s007760200124
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DOI: https://doi.org/10.1007/s007760200124