Lorenzo-Sanz G, Egea-Nadal P, García-Villanueva M, Gamir M L, Ocete G, García-Lacalle C
Servicio de Pediatría, Hospital Ramón y Cajal, Universidad Alcalá de Henares, Madrid, España.
Rev Neurol. 1998 Sep;27(157):505-8.
We present the case of a 13 years old boy with a year-old history of a painful tumour on the external and distal third of the right thigh. The imaging tests suggested a soft tissue tumour but the muscle biopsy revealed the typical findings of focal myositis. Focal myositis is a benign inflammatory pseudotumour of the skeletal muscle recognized as a distinct clinicopathological entity, but there have been descriptions of the cases initially diagnosed as focal myositis that have latter behaved as evident polymyositis. We have not found laboratory data to support a diagnosis of polymyositis in our patient.
Although focal myositis is considered a self-limited disease, we believe a long-term clinical and biochemical follow-up is warranted, to confirm the absence of recurrence signs and/or the development of a generalized myopathy.
我们报告一例13岁男孩的病例，其右大腿外侧远端有一个疼痛性肿瘤，病程为一年。影像学检查提示为软组织肿瘤，但肌肉活检显示为局灶性肌炎的典型表现。局灶性肌炎是一种骨骼肌的良性炎性假瘤，被认为是一种独特的临床病理实体，但有一些最初诊断为局灶性肌炎的病例后来表现为明显的多发性肌炎。我们未发现支持该患者诊断为多发性肌炎的实验室数据。
尽管局灶性肌炎被认为是一种自限性疾病，但我们认为有必要进行长期的临床和生化随访，以确认无复发迹象和/或全身性肌病的发生。
