title: Melanosomes in the acinar cells of paranasal sinusal glands found in a case of nasal malignant melanoma.
abstract: Fine structures of melanosomes incidentally found in the secretory cells of the paranasal sinusal glands associated with nasal malignant melanoma are described and their origin is discussed. It is suggested that these melanosomes in the secretory cells are not de novo products but are ingested by cytocrine process.
mesh_terms: D003594:Cytoplasmic Granules / Q000378:metabolism / Q000648:ultrastructure*; D006801:Humans; D008297:Male; D008543:Melanins / Q000378:metabolism; D008544:Melanocytes / Q000473:pathology / Q000648:ultrastructure*; D008545:Melanoma / Q000648:ultrastructure*; D008875:Middle Aged; D009669:Nose Neoplasms / Q000648:ultrastructure*; D010256:Paranasal Sinuses / Q000648:ultrastructure*
chemical_list: D008543:Melanins