Frontal Parosteal Lipoma

Abstract

Parosteal lipoma of the head and neck is very rare, and there is no reported case of parosteal lipoma in the frontal region. We present the case of frontal parosteal lipoma in a 20-year-old man who was referred for a forehead mass causing a cosmetic problem. Computed tomography revealed an osseous projection with cortical irregularity and soft tissue enlargement. Excision of the lesion revealed a 7 x 4.5-cm lobulated, encapsulated, yellow tan mass. Histopathologic examination revealed mature adipose tissue, and pathologic diagnosis of lipoma was made. Here, we present the first case of parosteal lipoma in the frontal region.

Parosteal Lipoma Overlying an Osteochondroma of the Hyoid Bone: A Case Report and Literature Review

“…One patient with parosteal lipoma identified in this review elected for routine surveillance rather than undergoing surgical intervention. Although these neoplasms are benign, they may cause aesthetic concerns and/or functional deficits due to nerve bundle compression 1,4 . Additionally, surgical resection is often recommended due to the concern for malignant disease based on the radiological findings of reactive osseous changes such as hyperostosis and periosteal thickening that are often seen with these masses 4 .…”

“…Additionally, surgical resection is often recommended due to the concern for malignant disease based on the radiological findings of reactive osseous changes such as hyperostosis and periosteal thickening that are often seen with these masses 4 . For cases with suspicion of malignancy, histopathologic analysis can be utilized to confirm the presence of mature adiopocytes and bone foci, consistent with osseous lipoma 1,4 . If imaging depicts a typical benign parosteal lipoma with no changes to adjacent bones and a patient is asymptomatic, the patient can be offered radiographic surveillance as a less invasive alternative for surgical resection.…”

“…Parosteal lipomas are rare benign tumors that make up roughly 0.3% of all lipoma cases 1 . Conversely, osteochondromas are the most common benign bone tumor and constitute over a third of all benign bone tumors 2 .…”

Skull Parosteal Lipoma with Reactive Hyperostosis: A Case Report

“…Cil et al recently reported the case of a 20-year-old man who presented with frontal parosteal lipoma. 2) Although a few cases of skull parosteal lipoma had been reported before 1962 according to the review of a parosteal lipoma by Fleming et al, 1) skull parosteal lipoma has been rarely reported recently, probably due to strict definition of the entity. Bony changes are associated with a parosteal lipoma, and, in particular, reactive hyperostosis of cortical bone is frequently observed.…”

“…If a parosteal lipoma could be diagnosed on preoperative imaging, resection of the tumor along with shaving of the reactive ossification would be a sufficient management procedure. 2) An open biopsy followed by resection of the tumor is recommended in cases of lesions at high surgical risk for wide resection.…”