thymoma

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thymoma

[thī′mō·mə]
(medicine)
A usually benign primary tumor of the thymus composed principally of lymphocytic and epithelial cells in varying proportions.
References in periodicals archive ?
On radiography, thymomas can present as a mediastinal mass with or without calcifications (Figure 7A).
Eleven patients did not receive thymectomy, we summarized the histologic types of thymomas among the remaining 36 patients, the histologic type of thymoma in three patients were according to traditional classification (one was lymphocytic type, the other two were mixed cell type), 28 patients were according to the World Health Organization (WHO) classification [Table 1], and five patients were not specified.
Third, the authors did not provide WHO and Masaoka-Koga classifications of thymomas with relative quantitative metrics at CT perfusion.
Although thymomas are more common in older birds, this neoplasm cannot be excluded in immature birds.
In 1955, Castleman (14) defined thymomas as tumors composed of lymphocytes and epithelial cells.
12) In other studies like Cohen et al (9), Davis et al (8), Singh et al (6) and Dubashi et al (7) thymomas were most commonly followed by lymphomas and bronchogenic carcinomas.
Incidental locally infiltrating malignant thymoma and coronary artery bypass surgery-excision should always be considered.
Good syndrome is a rare disease that comprises thymoma and humoral immunodeficiency.
1] In addition, FDG PET/CT may assist in differentiating thymoma from thymic carcinoma.
At autopsy, the thymus was diffusely enlarged, consistent with thymoma.
Masses arising in the anterior mediastinum include most commonly, thymomas (approximately 20 percent of cases), lymphomas (15-20 percent of cases), and germ cell tumors (approximately 15 percent of cases).
Pathologists, radiologists, and a surgeon from the US present 17 chapters detailing the pathology of the neoplastic and non-neoplastic diseases of the mediastinum, such as thymomas, thymic carcinomas, neuroendocrine carcinomas, lymphomas, cardiac and pleural lesions, mesothelioma, parathyroid and thyroid lesions, and germ cell tumors.