Wessig Carsten, Kenn Werner, Koltzenburg Martin, Bendszus Martin
Department of Neurology, University of Würzburg, Josef-Schneider-Strasse 11, 97080 Würzburg, Germany.
Muscle Nerve. 2006 Jul;34(1):108-10. doi: 10.1002/mus.20537.
We report a patient with an extensive paranasal sinus carcinoma. One year after tumor resection, magnetic resonance imaging (MRI) showed swelling of the ipsilateral masticatory muscles with signal increase on T2-weighted images and gadolinium-DTPA uptake, suggestive of local tumor infiltration. However, electromyography, biopsy, and follow-up MRI confirmed denervation pseudohypertrophy of the muscles innervated by the mandibular nerve and excluded tumor recurrence. Muscle denervation and pseudohypertrophy should be considered in the differential diagnosis of appropriate patients with suspected tumor recurrence.
我们报告一例广泛鼻窦癌患者。肿瘤切除术后一年，磁共振成像（MRI）显示同侧咀嚼肌肿胀，T2加权图像上信号增强，钆喷酸葡胺摄取增加，提示局部肿瘤浸润。然而，肌电图、活检及随访MRI证实为下颌神经支配肌肉的失神经假性肥大，排除肿瘤复发。对于疑似肿瘤复发的合适患者，鉴别诊断时应考虑肌肉失神经和假性肥大。
