[A study of thymoma associated with cancer of the other organs]

Out of 97 cases of thymoma for the last 20 years, we have experienced 7 cases (9%) of thymoma associated with cancer of the other organs. The average age of the 7 cases was 60 years old and there were 3 females and 4 males. The organ with cancer was stomach in 3 cases, thyroid in 2, and lung, breast, colon and leukemia in one respectively. Histological classification of 8 thymomas in 7 cases was 3 epithelial type, 2 lymphocytic type and 3 mixed type. Myasthenia gravis with thymoma was only one out of them. we have to follow up carefully the patient with thymoma about occurrence of cancer of the other organs without thymus for a long time.