title: Cytologic diagnosis and ultrastructure of fine-needle aspirates of ganglion cysts.
abstract: This report describes 28 ganglion cysts in 21 patients. The presence of a colorless to pale-yellow gelatinous material in the aspirate is pathognomonic of ganglion cyst. The smears are fairly monotonous, and show abundant mucoid material, single cells resembling histiocytes, a few tight clusters of cells, some collagen fibers, and some red blood cells with altered shapes. Ultrastructural studies performed on five specimens reveal the fibroblastic and/or histiocytic nature of the cells in the aspirates.
mesh_terms: D000293:Adolescent; D000328:Adult; D001707:Biopsy, Needle / Q000191:economics; D002467:Cell Nucleus / Q000648:ultrastructure; D003560:Cysts / Q000473:pathology* / Q000628:therapy; D003593:Cytoplasm / Q000648:ultrastructure; D003599:Cytoskeleton / Q000648:ultrastructure; D003896:Desmosomes / Q000648:ultrastructure; D005121:Extremities; D005260:Female; D006801:Humans; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D013194:Staining and Labeling