An aggressive, non-small cell, poorly differentiated thymic neuroendocrine carcinoma, characterized by the presence of a high mitotic rate and, almost always, necrosis. The disease is MONDO_0003047 (thymic large cell neuroendocrine carcinoma). Also known as: Thymus large cell carcinoma, large cell carcinoma of the Thymus, large cell neuroendocrine carcinoma of Thymus, large cell neuroendocrine carcinoma of the Thymus, large cell neuroendocrine carcinoma of thymus, thymic LCNEC, thymus large cell carcinoma, thymus large cell neuroendocrine carcinoma.