Differential diagnosis of tumours of the minor salivary glands of the palate by computed tomography

Dento Maxillo Facial Radiology
T KurabayashiM Ueda

Abstract

To define the CT criteria for differentiating malignant from benign tumours of the minor salivary glands of the palate and to evaluate their accuracy. CT findings of 63 patients with histopathologically proven minor salivary gland tumours of the palate (23 malignant, 40 benign) were retrospectively evaluated. Aggressive bone destruction was a specific finding of malignant tumours, but was seen in only 57% (13/23) of this series. Extension into the pterygopalatine fossa was observed in seven malignant and one benign tumour. Calcifications within a tumour were observed in four cases, all of which were malignant. These three CT findings were significantly more frequent in malignant tumours. Using any one of these as the criterion for the malignancy, the sensitivity was 78% (18/23), specificity 98% (39/40) and accuracy 90% (57/63). Malignant tumours of the minor salivary glands of the palate are very likely to show any or all of aggressive bone destruction, extension into the pterygopalatine fossa and calcification, whereas benign tumours can almost always be correctly diagnosed by their absence.

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Citations

May 31, 2003·Dento Maxillo Facial Radiology·H-U SongK-J Koh
Feb 5, 2011·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Wilfredo Alejandro González-ArriagadaMarcio Ajudarte Lopes
Dec 8, 2009·Otolaryngologic Clinics of North America·Oded Nahlieli
Oct 30, 2007·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Renata Falchete do PradoYasmin Rodarte Carvalho
Nov 18, 2004·The Journal of Craniofacial Surgery·Giulio CerulliRoberto Becelli
Nov 15, 2020·Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology·Brian WolfVictor Nannini

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