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Thymomas are tumors derived from thymic epithelial cells and contain various proportions of benign lymphoid proliferating cells. Located in the ventral cervical region or cranial mediastinum, these tumors are usually well circumscribed and rarely
Thymomas are neoplasms that originate from the thymic epithelium. Their development in many species, including dogs, cats, rabbits, and ferrets, has been described. 1–6 Although rare, thymoma is one of the most common cranial mediastinal tumors
Thymomas are uncommon neoplasms of the cranial mediastinum; they are derived from thymic epithelial cells 1 and have variable lymphocytic infiltration. 2 They are considered to be one of the most common tumors of the cranial mediastinum in dogs
controls reacted appropriately. Morphologic Diagnosis and Case Summary Thymoma (type B3) with hepatic, pulmonary, and vertebral metastasis. Comments Differential diagnoses for a cranial mediastinal mass include thymoma, lymphoma
Neoplasia of the cranial mediastinum is rare in dogs, but when observed, thymoma is the most common diagnosis. 1,2 The recommended treatment for neoplasia in this particular region is mass extirpation via intercostal thoracotomy or median
2 cases of leiomyosarcoma in related Saanen does have been described. Hill et al 6 reported the clinical signs, signalment, treatment, and outcomes of 13 cases of goats diagnosed with thymomas over a 24-year period. While that study 6 was useful in
/kg [0.023 mg/lb], IV, q 4 to 6 h as needed) for analgesia. The patient was discharged from the hospital the following day. Results of histologic examination were consistent with malignant thymoma with prominence of epithelial and lymphoid components
lymphocytes (L) are present. H&E stain; bar = 100 μm. Morphologic Diagnosis and Case Summary Morphologic diagnosis and case summary: noninvasive thymoma, predominantly epithelial, in a cat. Comments Thymomas are rare in domestic animals
-rich thymoma in a dog. Comments Gross and histologic findings in the present case were consistent with lymphocyte-rich thymoma and widely disseminated metastases. Thymomas are uncommon tumors in mammals and are derived from remnant thymic epithelial
