Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0677930 (primary tumor)
 20,210 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Thymoma is an uncommon neoplasm derived from thymic epithelium. It is located in the anterosuperior mediastinum. Thymoma may be associated with different types of additional primary malignancies; however, colorectal adenocarcinoma and thyroid cancer appear to be most common. A case is presented of a 63-year-old woman with type A thymoma and two other primary carcinomas of the breast and colon that were previously diagnosed. The patient underwent surgery due to metastatic colon cancer of the lung and yet another primary tumor was found in the mediastinum, later diagnosed as thymoma. A normal diploid pattern was found in the samples of thymoma and colon carcinoma, whereas those of breast carcinoma and metastatic tumor of the lung showed aneuploidy. On the basis of previous studies and our case, it is concluded that the occurrence of extrathymic malignancies does not correlate with the biologic behavior and DNA ploidy of thymoma.
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PMID:DNA ploidy in thymoma and associated multiple primary malignancies in the same patient. 1917 64

We present a case of type A thymoma with invasion of the left brachiocephalic vein and lung metastases. An 84-year-old man underwent extended thymectomy combined with left brachiocephalic vein reconstruction and resection of a lung metastasis. Histological examination showed vascular invasion by the tumor. The lung metastasis had high mitotic activity and slight nuclear enlargement, the so-called "atypical" features, but the main part of the primary tumor did not. However, the intravascular portion of the tumor had "atypical" histological features like the lung metastasis. It seems that "atypical" histological features are related to clinically malignant behavior.
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PMID:A case of atypical type A thymoma with vascular invasion and lung metastasis. 2864 99

A 35-year-old woman had undergone extensive thymothymectomy for type A thymoma several years ago. However, two small lung nodules were found 4 and 5 years after surgery. After a partial lung resection to remove these nodules, pathology revealed that they were metastases of the type A thymoma. A pathological re-evaluation confirmed that the primary tumor had in fact been an atypical type A thymoma variant, a subset added to the WHO classification in 2015. Pathology should be re-evaluated in all patients diagnosed with type A thymoma before 2015 since they may have the more aggressive atypical type A thymoma variant.
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PMID:Lung metastases in an atypical type A thymoma variant. 2922 48

The occurrence of second primary tumor (SPT)following malignancy treatment is common. In patients with head and neck (H&N) cancer, SPTs principally occur in the H&N region, lungs or esophagus. Therefore, patient follow-up after cancer treatment is important in order to detect recurrence, metastasis and new primary tumors. However, no standard guidelines on lifelong follow-up imaging are available. Herein, we report a patient who presented with three metachronous primary tumors-squamous cell carcinoma (SCC) of the tongue, SCC of the lip and type A thymoma. The third tumor was incidentally detected during follow-up using contrast-enhanced computed tomography (CT) 9 years following resection of the second tumor. To the best of our knowledge, this specific combination of metachronous tumors has not yet been reported. Based on the literature review, we observed that thymoma occurs following H&N cancer treatment. Therefore, to ensure that the presence of subsequent thymomas is not overlooked, we suggest regular lifelong follow-up using contrast-enhanced CT in patients who had previously been diagnosed with H&N cancer. The literature review revealed that thymomas occur in patients with H&N cancer and should be detected at the earliest convenience.
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PMID:Thymoma appearing 9 years after the resection of squamous cell carcinoma of the lip: A case report of triple primary tumors and literature review. 3145 56