Oat cell carcinoma as a malignant apudoma

Multiple myeloma and oat cell carcinoma.

An association linking multiple myeloma with a higher incidence of carcinomatous tumours has been reported. The following case report describes a man diagnosed as having bronchogenic carcinoma found also to have myelomatosis. Aspects of this association are discussed.

Oat-cell carcinoma of the bronchus.

Primary oat cell carcinoma of the oesophagus.

Three cases of oat cell carcinoma of the oesophagus are presented and published reports reviewed. This is mainly a disease of older age with a 3:2 predominance of men. Of all published cases, 43 (47.3%) occurred in the middle third, 41 (45.1%) in the lower third, and four (4.4%) in the upper third. In one case it was multifocal and in two the location was not stated. Dysphagia was the most comm...

Metastatic Renal cell Carcinoma Presenting as a clear-cell Tumor in Tongue: A Case Report

Introduction: Metastatic lesions of the oral cavity are extremely rare, accounting for approximately 1% of all malignant oral tumors. The most common primary sources of metastatic tumors in the oral region are, from the most to the least common, the breast, lung, kidney, bone, and colon. Renal cell carcinoma accounts for nearly 3% of all adult malignancies. It usually metastasizes to the lungs,...

Oat-cell carcinoma of the oesophagus: a recently recognized entity.

A primary oat-cell carcinoma of the oesophagus is described with an adjacent squamous carcinoma, both parts having characteristic ultrastructure. The origin of this mixed tumour is discussed together with the literature on oesophageal carcinomas having an oat-cell pattern.