title: Intracytoplasmic crystalloids in granular cell ameloblastoma.
abstract: A case of granular cell ameloblastoma with numerous intracytoplasmic crystalloids is reported. The intracytoplasmic crystalloids are linear in shape and up to 15 microns in length, and stained similar to the intracytoplasmic granules of granular cell ameloblastomas which have been identified histochemically as lysosomes. The intracytoplasmic crystalloids in the granular cell ameloblastoma presented here probably reflect a variant type of lysosome, possibly due to cellular degeneration.
mesh_terms: D000328:Adult; D000564:Ameloblastoma / Q000648:ultrastructure*; D003461:Crystallography; D003594:Cytoplasmic Granules / Q000648:ultrastructure*; D006801:Humans; D008247:Lysosomes / Q000648:ultrastructure; D008297:Male; D008339:Mandibular Neoplasms / Q000648:ultrastructure*; D013194:Staining and Labeling