nerve sheath neoplasm granular cell tumor https://rarediseases.info.nih.gov/diseases/9618/granular-cell-tumor https://www.malacards.org/card/granular_cell_tumor Abrikosoff's tumour UMLS:C0085167 EFO:1000284 Abrikossoff tumour Abrikosov's tumour granular cell nerve sheath tumour giant granulocellular Abrikosov's tumour ONCOTREE:GCT granular cell tumour (morphologic abnormality) Abrikosoff's tumor Abrikossoff tumor granular cell tumor granular cell neoplasm ICDO:9580/0 GARD:0009618 MONDO:0006235 MEDGEN:88345 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 MESH:C535558 malignant variant of Abrikosov's tumour DOID:2411 granular cell myoblastoma granular cell tumour NOS (morphologic abnormality) granular cell tumor NOS (morphologic abnormality) GCT granular cell tumor (morphologic abnormality) granular cell schwannoma Abrikosov's tumor neoplasm of granular cell Abrikosov’s tumour Abrikosov’s tumor granular cell nerve sheath tumor NCIT:C3474 MESH:D016586 ICD9:215.9 giant granulocellular Abrikosov's tumor SCTID:404035005 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 malignant variant of Abrikosov's tumor Abrikosoff's granulous cell tumor Abrikosoff's granulous cell tumour Abrikossoff's tumour