Form of carcinoma of the lung in which the cells are small, spindle-shaped and dark-staining. May derive from argyrophilic APUD cells of the mucosa and certainly tends to be associated with endocrine symptoms.
<tumour> An anaplastic, highly malignant, and usually bronchogenic carcinoma composed of small ovoid cells with very scanty cytoplasm; this carcinoma and small round cell carcinoma's comprise over one-third of carcinoma's of the lung. ... Synonym: small cell carcinoma. ... (05 Mar 2000) ... Found on http://www.encyclo.co.uk/local/20973
a form of small cell carcinoma in which the cells are round or elongated and slightly larger than lymphocytes; they have scanty cytoplasm and clump poorly. Found on http://www.encyclo.co.uk/local/21001