title: [Noncontrast computed tomography in the diagnosis of tumors of the major salivary glands].
abstract: Non-contrast computed tomography (CT) of the major salivary glands was made in 127 patients, which revealed 95 space-occupying lesions (88 intraglandular and 7 extraglandular ones). Pleomorphic tumors of the parotid glands are solitary, round, high-density (29.6 +/- 4.2 HU) masses with well-defined, smooth margins. Salivary cysts were characterized by the presence of a dense capsule; the density of cyst contents was 8.0 +/- 2.0 HU. Salivary lipomas had a characteristic tomographic pattern due to the presence of adipose tissue; the lipoma density was -108.3 +/- 7.8 HU. Malignant parotid tumors were characterized by the presence of higher-density masses with irregular shapes and ill-defined, indistinct margins. Benign submandibular gland tumors had no well-defined margins that separated the tumor from the gland; the density of a tumor matched that of the parenchyma; the mean tumor size was 3.6 +/- 1.3 cm; there was an increase in the sizes of the gland as compared to those of the contralateral gland, as well as a displacement of the adjacent soft tissues. Malignant submandibular gland neoplasms tumors were characterized by the presence of inhomogenous lower-density masses with irregular shapes. Enlarged paraglandular lymph nodes were observed. The sensitivity, specificity, and accuracy of native CT in diagnosing space-occupying lesions of the salivary glands were 97.6, 96.4, and 97.6%, respectively.
authors.forename: V V
authors.initials: VV
authors.lastname: Koblikov
authors.forename: L P
authors.initials: LP
authors.lastname: Sapozhkova
authors.forename: S A
authors.initials: SA
authors.lastname: Kondrashin
authors.forename: A A
authors.initials: AA
authors.lastname: Bykova
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009929:Organ Size; D058996:Quality Improvement; D012466:Salivary Gland Diseases / Q000175:diagnosis / Q000000981:diagnostic imaging; D012468:Salivary Gland Neoplasms / Q000175:diagnosis / Q000000981:diagnostic imaging; D012469:Salivary Glands / Q000473:pathology*; D014057:Tomography, X-Ray Computed / Q000379:methods* / Q000592:standards