Multi-slice CT imaging analysis of basal cell adenoma in the parotid gland

Abstract

Objective To investigate the CT imaging features of basal cell adenoma in the parotid gland and thus to improve the preoperative diagnostic accuracy. Methods The clinical materials and image findings of 8 cases with parotid basal cell tumor, which were proved by pathology, were retrospectively studied. Results All 8 patients had solitary BCA lesion, which involved both the superficial and deep lobe(n=1) and located at the superficial lobe of parotid gland(n=7). All the 6 tumors were clear boundary and round shape without lobular appearance.The diameters of the max lesions ranged from 10.3-27.6 mm.CT scan showed that all lesions were solid nodules with uniform or uneven density.Cystic degeneration was displayed in 5 lesions, among them, cystic area was ≥90% in 1 lesion.At enhanced scanning phase, most tumors showed a strong enhancement at the arterial phase and a pattern of persistent strong enhancement or slow decline at the venous phase. Conclusion The multi-slice CT imaging features of BCA in parotid gland are characteristic, which is helpful to make qualitative diagnosis in combination with clinical materials. Key words: Basal cell adenoma; Parotid tumor; Tomography, X-ray computed