Martínez René, Niklander Sven, Deichler Javiera, Leissner Oliver, Seguel Heraldo, Esguep Alfredo
Oral Pathology Department, Faculty of Dentistry, Universidad Andrés Bello, Viña del Mar, Chile.
Naval Hospital Admiral NEF, Viña del Mar, Chile.
J Dent Sci. 2018 Mar;13(1):75-79. doi: 10.1016/j.jds.2013.02.032. Epub 2013 Jun 28.
Alveolar soft-part sarcomas are clinically and morphologically distinct soft-tissue sarcomas, with an unknown histogenesis. When the tumors affect the region of the head and neck, they are often located in the orbit and tongue. We report a case of an alveolar soft-part sarcoma in the left masseter of a 28-year-old female. The patient had chronic pain and paresthesia of her left lower lip. Panoramic radiography and computed tomography showed a well-delimited radiolucent mass in the left ramus. An incisional biopsy was performed, and the sample submitted for histopathological study. The tumor showed positive periodic acid-Schiff diastase-resistant granules. Immunohistochemically, the tumor cells were diffusely positive for myoglobin, and focally positive for actin and desmin.
肺泡软组织肉瘤是临床上和形态学上独特的软组织肉瘤，其组织发生尚不明确。当肿瘤累及头颈部区域时，它们常位于眼眶和舌部。我们报告一例28岁女性左咬肌的肺泡软组织肉瘤病例。患者左下唇有慢性疼痛和感觉异常。全景X线片和计算机断层扫描显示左下颌支有一个边界清晰的透光肿块。进行了切开活检，并将样本送检进行组织病理学研究。肿瘤显示对高碘酸-希夫淀粉酶抵抗颗粒呈阳性。免疫组织化学检查显示，肿瘤细胞肌红蛋白弥漫性阳性，肌动蛋白和结蛋白局灶性阳性。
