title: Ultrastructure of an anaplastic giant-cell carcinoma found 8 years after operation on a papillary carcinoma of the thyroid.
abstract: Light and electron microscopic studies have been made on an anaplastic giant-cell tumor that developed in a woman 8 years after an operation on the thyroid for papillary carcinoma. Many giant cells were observed in the anaplastic tumor tissue, but no follicles. Numerous tightly-packed mitochondria and abundant ribosomes were present, but there were no desmosomes. The basement membrane was not distinct.
mesh_terms: D000368:Aged; D002277:Carcinoma / Q000648:ultrastructure*; D002291:Carcinoma, Papillary / Q000648:ultrastructure*; D003593:Cytoplasm / Q000648:ultrastructure; D005260:Female; D006801:Humans; D009378:Neoplasms, Multiple Primary / Q000648:ultrastructure*; D013964:Thyroid Neoplasms / Q000648:ultrastructure*