Granular cell ameloblastoma of the jaw. A report of two cases with fine needle aspiration cytology. 2000

A Deshpande, and P Umap, and M Munshi
Department of Pathology, Government Medical College, Nagpur, Maharashtra, India.

BACKGROUND Fine needle aspiration cytology (FNAC) of jaw tumors has not been studied extensively. Ameloblastomas are jaw tumors that show a wide morphologic spectrum and thus may pose some diagnostic difficulties. Of the many types, granular cell ameloblastoma (GCA) is an uncommon variant that possesses distinctive features. To the best of our knowledge, there have been no previous reports on the cytologic findings of GCA. We present two cases diagnosed by FNAC. METHODS Two cases of GCA were diagnosed on cytology and subsequently confirmed on histology. Both patients presented with a large, lytic jaw tumor. FNAC smears showed characteristic granular cells along with spindle and basaloid cells. CONCLUSIONS Although GCAs are rare tumors, they possess distinctive features that permit an accurate diagnosis, provided that this entity is kept in mind. This tumor has to be differentiated from cystic odontogenic lesions, epulis and granular cell myoblastoma. An accurate preoperative diagnosis also helps the surgeon to plan more extensive surgery as these tumors show a great propensity for malignant change and metastases.

UI MeSH Term Description Entries
D008339 Mandibular Neoplasms Tumors or cancer of the MANDIBLE. Mandibular Neoplasm,Neoplasm, Mandibular,Neoplasms, Mandibular
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D003594 Cytoplasmic Granules Condensed areas of cellular material that may be bounded by a membrane. Cytoplasmic Granule,Granule, Cytoplasmic,Granules, Cytoplasmic
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000564 Ameloblastoma An immature epithelial tumor of the JAW originating from the epithelial rests of Malassez or from other epithelial remnants of the ENAMEL from the developmental period. It is a slowly growing tumor, usually benign, but displays a marked propensity for invasive growth. Ameloblastomas
D001707 Biopsy, Needle Removal and examination of tissue obtained through a transdermal needle inserted into the specific region, organ, or tissue being analyzed. Aspiration Biopsy,Puncture Biopsy,Aspiration Biopsies,Biopsies, Aspiration,Biopsies, Needle,Biopsies, Puncture,Biopsy, Aspiration,Biopsy, Puncture,Needle Biopsies,Needle Biopsy,Puncture Biopsies

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