title: Clara cell adenocarcinoma. Light and electron microscope studies.
abstract: A 52-year-old black man was found to have a round density in the right lower lung field. An exploratory thoracotomy disclosed a tumor in the right middle lobe, which by light microscopy was composed of malignant Clara cells. The electron microscopic studies confirmed the Clara cell nature of this neoplasm.
mesh_terms: D000230:Adenocarcinoma / Q000648:ultrastructure*; D001485:Basement Membrane / Q000648:ultrastructure; D002462:Cell Membrane / Q000648:ultrastructure; D002467:Cell Nucleus / Q000648:ultrastructure; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D004721:Endoplasmic Reticulum / Q000648:ultrastructure; D006056:Golgi Apparatus / Q000648:ultrastructure; D006801:Humans; D008175:Lung Neoplasms / Q000648:ultrastructure*; D008297:Male; D008875:Middle Aged; D008928:Mitochondria / Q000648:ultrastructure