Cardiac metastasis of neuroendocrine tumor of the thymus diagnosed by cardiac magnetic resonance T1 mapping: a case report.

Carcinoid heart disease is a late complication of carcinoid syndrome, and imaging can help in the diagnosis of diffuse cardiac metastasis. We herein report a case of diffuse cardiac metastasis of a neuroendocrine tumor of the thymus diagnosed using different imaging modalities. Cardiac magnetic resonance imaging played an important role in the diagnosis. The patient underwent conservative medical treatment and remained able to perform his usual activities of daily living.