腺样囊性癌(下称 ACC)是涎腺较常见的恶性肿瘤,但呈疤痕样病损者临床少见,易被误诊。现将我科收治两例报道如下。例1:女,52岁。右面颊部疤痕挛缩两年余,伴疼痛一年。于1984年10月8日入院,拟诊:①右上颌骨骨髓炎伴软组织挛缩;②右面颊部肿瘤。主诉两年前开始右面颊部皮肤麻木不适, Adenoid cystic carcinoma (hereinafter referred to as ACC) is a common malignant tumor of the parotid gland. However, scar-like lesions are rarely seen clinically and are easily misdiagnosed. Two cases of treatment in our department are reported below. Example 1: Female, 52 years old. The scar on the right cheek shrank more than two years, with pain for one year. On October 8, 1984, she was admitted to the hospital and was diagnosed with: 1 Right maxillary osteomyelitis with soft tissue contracture; 2 Right cheek tumor. The chief complaint started numbness of the skin on the right cheek two years ago.