McCluggage W G, Mirakhur M
Department of Pathology, Royal Group of Hospitals Trust, Belfast, Northern Ireland.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 1996 May;81(5):573-5. doi: 10.1016/s1079-2104(96)80049-7.
Focal myositis is an uncommon inflammatory myopathy of unknown cause affecting skeletal muscle. It may be mistaken on clinical evaluation for a malignant neoplasm. We describe two cases, both involving the mylohyoid muscle of the floor of the mouth. In each case excisional biopsy of a firm indurated mass revealed a focal lymphocytic and histiocytic infiltrate associated with degenerating and regenerating skeletal muscle fibers. No clinical or biochemical evidence of generalized muscle disease was seen at presentation or at 1-year and 7-year follow-up examination. The literature on focal myositis involving the head and neck region is reviewed.
局灶性肌炎是一种病因不明的罕见炎症性肌病，累及骨骼肌。在临床评估中，它可能被误诊为恶性肿瘤。我们描述了两例病例，均累及口底的下颌舌骨肌。在每例病例中，对一个坚实硬结肿块进行切除活检，结果显示有局灶性淋巴细胞和组织细胞浸润，并伴有骨骼肌纤维的变性和再生。在就诊时以及1年和7年的随访检查中，均未发现全身性肌肉疾病的临床或生化证据。本文对涉及头颈部区域的局灶性肌炎的文献进行了综述。
