J Korean Assoc Oral Maxillofac Surg.  2017 Apr;43(2):138-143. 10.5125/jkaoms.2017.43.2.138.

Malignant lymphoma on parotid gland: a clinical case

Affiliations
  • 1Department of Oral and Maxillofacial Surgery, School of Dentistry, Pusan National University, Yangsan, Korea. omsljy@pusan.ac.kr

Abstract

Non-Hodgkin's lymphoma on the parotid gland is a relatively rare occurrence among head and neck tumors. The mass of parotid gland lymphoma cannot be distinguished from other benign masses of the parotid gland; therefore, it is important to consider lymphoma in the differential diagnosis when examining parotid swellings and masses. Parotid gland lymphoma is most likely to be B-cell, non-Hodgkin's lymphoma of one of three types, which include follicular, marginal zone, and diffuse large B-cell, although other histologic patterns have been described. We present a review of a patient with diffuse large B-cell lymphoma (DLBCL) who presented to the Department of Oral and Maxillofacial Surgery of Pusan National University Hospital (Yangsan, Korea).

Keyword

Lymphoma; Diffuse large B-cell lymphoma; Parotid gland

MeSH Terms

B-Lymphocytes
Busan
Diagnosis, Differential
Head
Humans
Lymphoma*
Lymphoma, B-Cell
Lymphoma, Non-Hodgkin
Neck
Parotid Gland*
Surgery, Oral

Figure

  • Fig. 1 Computed tomography on face and neck before the surgery.

  • Fig. 2 A. Exposed facial nerve trunk. B. The lesion lied scattered on and beneath the nerve and enlarged lymph node (arrows). C. Fibrous tissue around the Stensen's duct. D. Main mass and enlarged lymph node.

  • Fig. 3 H&E staining (A: ×40, B: ×400).

  • Fig. 4 Immunohistochemistry was positive for bcl6 (×200; A), CD20 (×200; B), and MUM1 (×200; C).

  • Fig. 5 Positron emission tomographycomputed tomography.


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