[Mediastinal lymphomas: histopathology].

Mediastinal lymphomas are mainly aggressive tumors affecting young patients. Three main entities summarize this pathology: T lymphoblastic lymphoma, mediastinal (thymic) diffuse large B cell lymphoma, and classical Hodgkin lymphoma. Their diagnosis is usually performed on tissue collected by mediastinoscopy and requires the implementation of techniques such as classical histopathology, immunohistochemistry, and sometimes molecular biology.