Medullary carcinoma of the lung with amyloid stroma: a counterpart of medullary carcinoma of the thyroid

A patient surviving five years with an amyloid producing pulmonary neoplasm died of bronchopneumonia. At necropsy it was found that the amyloid was present only in association with the neoplastic cells, both within the lung and at the sites of metastases. To our knowledge this is a unique association. Our evidence suggests that this tumor might be a medullary carcinoma of the lung, a counterpart to medullary carcinoma of the thyroid.