Mediastinal Tumours and Cysts:A Review of 91 Cases

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Abstract
The experience with 91 primary tumors of the mediastinum during a period of 20 yr is presented. A total of 24 separate cell types were identified. The most frequent lesions were thyroid tumors, neurogenic tumors, cysts and tumors of lymphatic origin. About 50% of the tumors were discovered by chance in asymptomatic patients undergoing routine chest examination. Of the patients with malignant lesions, 20% were free of symptoms. The pre-operative diagnosis was uncertain in most instances and early surgical exploration is therefore recommended. Seventy-four patients underwent surgery and the operative mortality rate was 2.7%. The long-term survival was closely related to the histological nature of the neoplasm.

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