Feigin G A, Robinson B, Marchevsky A
Arch Pathol Lab Med. 1986 Jan;110(1):80-1.
A 36-year-old asymptomatic man was found to have a large middle mediastinal mass on a chest x-ray film. At surgery the tumor was located adjacent to the carina and beneath the aortic arch. It measured 7.0 X 5.0 X 4.0 cm and was well circumscribed and soft, with mucoid areas. The histologic features were those of a benign pleomorphic adenoma of salivary gland origin. This is, to our knowledge, the first reported case of primary pleomorphic adenoma of the mediastinum. We propose an origin from the ectopic salivary gland tissue. We also describe an additional patient in whom ectopic benign salivary gland tissue was found within mediastinal lymph nodes to support our hypothesis.
一名36岁无症状男性在胸部X线片上被发现有一个巨大的中纵隔肿块。手术中肿瘤位于隆突附近和主动脉弓下方。它的大小为7.0×5.0×4.0厘米，边界清晰，质地柔软，有黏液样区域。组织学特征为涎腺来源的良性多形性腺瘤。据我们所知，这是首例报道的纵隔原发性多形性腺瘤病例。我们认为其起源于异位涎腺组织。我们还描述了另外一名患者，在其纵隔淋巴结内发现了异位良性涎腺组织，以支持我们的假说。
