The mediastinum is the most common extragonadal location. In adults, approximately % of mediastinal tumors are germ cell tumors;. 20% of mediastinal tumors and cysts; Typically divided into seminomas versus nonseminomatous germ cell tumors (teratomas [mature or. Mediastinal germ cell tumors are tumors that derive from germ cell rest remnants in the mediastinum. They most commonly occur in the gonad but occasionally.
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Unlike benign germ cell tumors of the mediastinum, malignant mediastinal tumors are usually symptomatic at the time of diagnosis. Info – Admin Resources in pathology Technical section. Most mediastinal malignant tumors are large and cause symptoms by compressing or invading adjacent structures, including the lungs, pleura, pericardium, and chest wall.
From Wikipedia, the free encyclopedia. Semin Respir Crit Care Med.
Nasal cavity Esthesioneuroblastoma Nasopharynx Nasopharyngeal carcinoma Nasopharyngeal angiofibroma Larynx Laryngeal cancer Laryngeal papillomatosis. Patients with small tumors usually asymptomatic that appear resectable usually undergo thoracotomy and attempted complete resection followed by chemotherapy.
Mediastinal germ cell tumor
The anterior mediastinum is the most common primary extragonadal site for germinal neoplasms in adults and is second to the sacrococcygeal region for pathologially comparable tumors in children.
Histologic grading of pure teratomas has prognostic mediastimum in those neoplasms that are diagnosed in adolescents and young terminoma immature teratomas in the latter patients pursue an aggressive clinical course.
Some investigators suggest that this distribution arises as a consequence of abnormal migration of germ cells during embryogenesis.
It should be remembered that mediastinal lymph nodes are metastatic sites for primary gonadal germ cell tumors, so that a thorough clinical evaluation is necessary to exclude the latter possibility. Malignant mediastinal germ cell tumors of greminoma histologies were first described as a clinical entity approximately 50 years ago. Thymic seminoma with marked cystic changes, superior mediastinum.
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Mediastinal germ cell tumor – Wikipedia
Retrieved from ” https: This article may be too germinomx for most readers to understand. This page was last edited on 2 Augustat Squamous-cell carcinoma Adenocarcinoma Mucinous cystadenocarcinoma Large-cell lung carcinoma Rhabdoid carcinoma Sarcomatoid carcinoma Carcinoid Salivary gland—like carcinoma Adenosquamous carcinoma Papillary adenocarcinoma Giant-cell carcinoma.
Excised tumor with rib. Mediastinum Other malignancies Germ cell tumors Author: In these cases, the mediastinal germ cell tumor develops before or concomitantly with but not after acute megakaryoblastic leukemia.
May have mediasinum behavior if not limited to mediastinum at diagnosis Cancer ; Pathology by regions G. Among the malignant germ cell tumors, males are affected far more commonly than females, but the male to female ratio is approximately equal among mature cystic teratomas. Immunohistochemical staining for OCT4 has recently been validated as a powerful tool for detecting gonadal seminoma.
These results and those of other analyses suggest that the two malignancies derive from a common founding clone of cells i.
Please help improve it to make it understandable to non-expertswithout removing the technical details. The diagnosis of a mediastinal germ cell tumor should be considered in all mmediastinum males with a mediastinal mass. Regardless of the pathologic subtype, the mediastinal germ cell tumors have a predilection for patients in the first three decades of life.
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Germ cell tumors of the mediastinum.
This website is intended for pathologists and laboratory personnel, who understand that medical information is imperfect and must be interpreted using reasonable medical judgment. Pure mediastinal seminomas are curable in the large majority germinooma patients, even when metastatic at the time of diagnosis.