2Ramdas A, Jacob SE, Varghese RG, et al. Ectopic cervical thythe great mimic: A case report [ J ]. Indian J Pathol Microbiol, 2007,50 ( 3 ) :553 - 555.
3Triggiani V, Guastamacchia E, Lolli I, et al. Association of a wide invasive malignant thymoma with myastenia gravis and primary hyperparathyroidism due to parathyroid adenoma: case report and review of the literature[ J ]. Immunopharmacol Immunotoxicol, 2006, 28(2) :377 -385.