Lipomatous lesions of the parotid gland: Analysis of 70 cases

Abstract

We present the largest series, to our knowledge, of lipomatous lesions of the parotid gland. These masses, although rare, should be considered in the evaluation of a parotid mass. This series provides insight into the clinical presentation, diagnostic evaluation, and surgical treatment of parotid lipomatous lesions. Surgical extent depends on lesion location in the gland. Lipomatous masses can be effectively treated surgically with low morbidity and high cure rates.

Diagnostic dilemma of parotid lipomas: imaging versus fine needle aspiration cytology

“…CT and MRI are the imaging modalities of choice for facilitating the diagnosis of parotid gland lipomas. Imaging is also important in evaluating tumor location and formulating a surgical approach [8,9].…”

“…Contrast-enhanced high resolution CT is a useful radiological tool in the diagnosis of parotid lipoma. Normal parotid tissue reveals a positive density; however, lipomatous tissue reveals a well-demarcated, hypodense density (-50 to -150 Hounsfi eld units) [8,9]. In MRI, studies, lipomas show a high T1 and low T2 signal characteristic of fatty tissue that is comparable in signal intensity to subcutaneous fat.…”

Post-traumatic Lipoma of the Parotid gland

“…As in this case, the use of facial nerve monitoring helps in protecting nerve function. Recurrence after adequate resection is very rare [ 10 ].…”

Sialolipoma of the superficial lobe of the parotid gland: A case report and literature review

“…[12] In addition to the standard (pure) lipoma of the parotid gland, other histological subtypes have been described, e.g., angiolipoma, fibrolipoma, sialolipoma, and liposarcoma. [3] Nagao et al . first coined the term "sialolipoma" in 2001.…”

“…[2] This tumor is characterized by "a well-circumscribed mass composed of glandular tissue and mature adipose elements". [2] At present, 51 cases of sialolipoma have been reported in the world literature; 25 in the parotid gland,[12345678910111213141516] six in the submandibular gland,[1517] and the rest involved the minor salivary glands. [151819] We add one more case of parotid sialolipoma and review the literature.…”