naa a22 4500 510773370 CHVBK 20180411083222.0 cr unu---uuuuu 180411e20130901xx s 000 0 eng 10.1007/s12022-013-9251-1 doi (NATIONALLICENCE)springer-10.1007/s12022-013-9251-1 Leiomyosarcoma: A Rare Tumor of the Thyroid [Elektronische Daten] [Jantima Tanboon, Phawin Keskool] Primary leiomyosarcoma of the thyroid gland is uncommon. To date, 20 cases have been reported in English in the literature. The tumors usually present in elderly patients with female predilection and are associated with poor clinical outcome. Herein, we report an additional case of primary thyroid leiomyosarcoma in a 64-year-old woman. She underwent total thyroidectomy and later was discovered to have multiple lung and liver metastases. The patient died 3months after surgery. The major differential diagnoses including undifferentiated (anaplastic) carcinoma of the thyroid, spindle cell variant of medullary thyroid carcinoma, spindle cell tumor with thymus-like differentiation, uncommon primary tumor of the thyroid and metastatic tumors with predominant spindle cells are discussed. Springer Science+Business Media New York, 2013 Thyroid nationallicence Spindle cell tumor nationallicence Smooth muscle tumor nationallicence Leiomyosarcoma nationallicence Tanboon Jantima Department of Pathology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok Noi, 10700, Bangkok, Thailand aut Keskool Phawin Department of Oto-rhino-laryngology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok Noi, 10700, Bangkok, Thailand aut Endocrine Pathology Springer US; http://www.springer-ny.com 24/3(2013-09-01), 136-143 1046-3976 24:3<136 2013 24 12022 https://doi.org/10.1007/s12022-013-9251-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12022-013-9251-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tanboon Jantima Department of Pathology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok Noi, 10700, Bangkok, Thailand aut NATIONALLICENCE 700 1- Keskool Phawin Department of Oto-rhino-laryngology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok Noi, 10700, Bangkok, Thailand aut NATIONALLICENCE 773 0- Endocrine Pathology Springer US; http://www.springer-ny.com 24/3(2013-09-01), 136-143 1046-3976 24:3<136 2013 24 12022 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer