Title:Multiple Parotid Sebaceous Lymphadenoma: A Case Report and Review of the
Literature
Volume: 20
Author(s): Yanhui Yang, Mengjie Tang, Zhiyuan Wang, Yi Fu and Xiaoping Yu*
Affiliation:
- Department of Diagnostic Radiology, Hunan Cancer Hospital, Changsha 410013, Hunan, P.R. China
Keywords:
Major salivary gland, Neoplasm, Sebaceous, Ultrasound, X-ray computed tomography, MRI.
Abstract:
Introduction/Background:
Sebaceous lymphadenoma is a rare parotid gland neoplasm. Up to now, there have been several studies that have discussed the imaging
manifestations of salivary sebaceous lymphadenoma. In this paper, we have reported a case of multiple parotid sebaceous lymphadenoma
demonstrated by ultrasound, CT scan, and MRI examinations, including diffusion-weighted imaging. To the best of our knowledge, this report is
the first one on DWI findings of sebaceous lymphadenomas, and also the first report on multiple lesions in unilateral parotid gland.
Case Presentation:
A 41-year-old woman presented with a nodule in the left parotid region. The lesion has grown slowly for 2 months and was not associated with any
discomfort. Ultrasound, CT scan, and MRI examinations, including diffusion-weighted imaging, showed multiple nodules in the left parotid gland
of a 41-year-old woman. These nodules were heterogeneous on CT scan and MRI examinations, and intratumorally multifocal fat and cystic areas
were detected. On ultrasound examination images, these lesions were heterogeneous hypoechoic echotexture with multifocal irregular
hyperechogenic areas, without significant blood flow. The patient underwent a left parotidectomy. Histopathologic sections showed nests of
sebocytes distributed in lymphoid follicles and lymphocyte background, with obvious cystic changes. The patient recovered after receiving left
parotidectomy. The microscopy diagnosis was parotid sebaceous lymphadenoma.
Conclusion:
This case highlights the main imaging feature of parotid sebaceous lymphadenomas, namely an intraparotid heterogeneous nodule containing
multifocal fat and cystic areas, and its possible origination from an intraparotid lymph node. This case also indicates that this rare lesion may
involve multiple occurrences.
