obsolete_Granular Cell Tumor https://rarediseases.info.nih.gov/diseases/9618/granular-cell-tumor true granular cell tumor NOS (morphologic abnormality) giant granulocellular Abrikosov's tumor GARD:0009618 SCTID:404035005 neoplasm of granular cell Abrikosov’s tumor Abrikosoff's granulous cell tumor Editor note: MESH considers this a myoblastoma but we go with NCIT which states nerve sheath origin, consistent with GARD definition; also check ONCOTREE placement Abrikosov's tumor Replaced by Mondo term MONDO_0006235, with which this term was previously merged. Use: http://purl.obolibrary.org/obo/MONDO_0006235 Abrikossoff tumor EFO:1000284 GCT granular cell schwannoma ICD9:215.9 3.88.0 MESH:D016586 granular cell tumor (morphologic abnormality) granular cell nerve sheath tumor Abrikosoff's tumor granular cell myoblastoma UMLS:C0085167 ONCOTREE:GCT granular cell neoplasm MESH:C535558 DOID:2411 http://purl.obolibrary.org/obo/MONDO_0006235 granular cell tumor An unusual benign or malignant neoplasm characterized by the presence of neoplastic large polygonal cells with granular, eosinophilic cytoplasm which contains abundant lysosomes. It was originally thought to be a tumor originating from muscle cells and was named granular cell myoblastoma. Subsequent studies have suggested a derivation from Schwann cells. It affects females more often than males and it usually presents as a solitary mass. A minority of patients have multiple tumors. It can arise from many anatomic sites including the posterior pituitary gland, skin, oral cavity, esophagus, stomach, heart, mediastinum, and breast. Abrikossoff's tumor ICDO:9580/0 NCIT:C3474 malignant variant of Abrikosov's tumor