MTI Recommendations for PMID: 9293538

(Updated: March 14, 2007)

PMID- 9293538
TI - Ameloblastic fibrosarcoma arising de novo in the maxilla.
AB - An ameloblastic fibrosarcoma (AFS) arising in the maxilla of a 14-year-old male is described. The tumor originated from the alveolar bone of the right maxilla with no apparent history of pre-existing lesion. Histologically, the lesion was composed of benign-appearing epithelial islands and strands scattered within an exceedingly cellular mass of mesenchymal tissue comprising a large number of stellate-and spindle-shaped fibroblast-like cells with marked pleomorphism. Occasional cementum-like calcification was also noted. Immunohistochemically, the neoplastic mesenchymal cells were positive only for vimentin, whereas the ameloblast-like epithelial component showed a distinctly positive reaction for wide-spectrum keratin and squamous cytokeratin. Clinicopathological features of the current case, as well as previously reported examples of AFS originating from the maxilla, are briefly discussed.

Right	Wrong	Missed	Precision	Recall	F-Measure
4	11	4	0.2667	0.5000	0.3478
Manual			MTI
Adolescent Biopsy Fatal Outcome Humans Male [CT] Maxilla [2] *Maxillary Neoplasms [5] *Odontogenic Tumors [1]			*Odontogenic Tumors (MM;RC) *Maxilla (MM) *Fibrosarcoma (MM;RC) *Mouth Neoplasms (MM;RC) Maxillary Neoplasms (RC) Mandibular Neoplasms (RC) Odontoma (RC) Jaw Neoplasms (RC) Keratins (MM;RC) Vimentin (MM;RC) Dermatofibrosarcoma (RC) Sarcoma (RC) Neoplasm Recurrence, Local (RC) Carcinosarcoma (RC) Male (CT)

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