Frontalis associated intramuscular lipoma: a case report

<p>Lipomas are the most common benign mesenchymal tumours that are composed of adipose tissue. They can occur at any age and can arise in any location, but are more frequently found on the chest, arm, shoulder and thigh. We report a rare case of lipoma attached to the frontalis muscle in a 65 year old male patient. Clinical examination had revealed a 1.5×1.5 cm in size, firm, non-tender, mobile subcutaneous nodule on the right side of the forehead that gradually increased in size over 8 years. Differential diagnosis of lipoma, liposarcoma, epidermal cyst and sebaceous cyst of the forehead were considered. Non-Contrast computed tomography revealed it to be a solitary, localized, circumscribed nodule within the frontalis without any bony involvement. The nodule was surgically removed and the diagnosis of intramuscular lipoma was confirmed on histopathological examination. The postoperative healing was uneventful and one year follow-up did not show recurrence. The prognosis of the rare frontalis associated intramuscular lipoma is good and risk of recurrence is low provided there is complete removal.</p>

Giant Intramuscular Lipoma of Biceps Brachii – A Rare Case Report

Lipomas are benign mesenchymal tumors. They are the most common type of soft tissue tumors. Intramuscular lipoma is a relatively uncommon condition and accounts for about1.8% of all primary tumors of adipose tissue and are relatively rare in upper extremity. When deep, large and unusual in location, magnetic resonance imaging (MRI) can identify and localise these tumours and is the best modality to differentiate lipoma and liposarcoma. We report an extremely rare and interesting case of giant intramuscular biceps brachii lipoma. A 22-year male patient presented with insidious onset, firm and non-tender swelling in the left elbow without any distal neurovascular deficits. MRI and biopsy were suggestive of lipoma. Wide local excision was done and patient had an uneventful recovery. Post-operative histopathology was suggestive of lipoma. To conclude, intramuscular giant lipoma of biceps brachii is an infrequent clinical entity due to its location. Imaging is necessary to differentiate it from its malignant counterpart and to plan surgical management.

Posterior interosseous nerve entrapment by intramuscular lipoma arising from the supinator muscle - a case report

Background: Lipomas are benign, slow-growing tumors frequently subcutaneous and asymptomatic, intramuscular lipoma constituting a rare subtype. However, a lipoma occurring nearby the proximal radius may cause posterior interosseous nerve (PIN) entrapment. Case presentation: We described an uncommon case of a 45-year-old-man with a history of progressive, painless proximal right (dominant) forearm swelling for 4 months associated with PIN entrapment syndrome, presenting as fingers extension weakness. Intramuscular lipoma was observed in the supinator muscle in the magnetic resonance imaging (MRI). Lipoma surgical excision and release of the PIN through proximal forearm direct anterior approach was performed. Results: The histopathological examination confirmed the diagnosis of benign intramuscular lipoma. The follow-up of the patient showed full recovery within three months postoperatively. Discussion: Intramuscular lipoma is rare; however, it could originate from supinator muscle in the forearm, presenting with vague pain and could lead to compression of nearby neurovascular structures such as the PIN. Clinical evaluation and imaging studies, especially MRI, are crucial for diagnosis. If neural compression is evident, surgical resection is mandatory. Conclusion: Intramuscular lipoma entrapping PIN is rare and requires early clinical diagnosis confirmed by imaging and neurophysiological studies, surgical excision being the method of choice for optimum functional outcomes.

Rare Intramuscular Lipoma of the Foot: A Case Report

Intramuscular lipoma is a rare subset of a more common soft-tissue tumor, lipoma. The etiology is unknown. It is a rare soft-tissue tumor with an overall incidence of less than 1% of all lipomas. Magnetic resonance imaging tends to be the imaging modality of choice, used for surgical preparation. Widely accepted treatment involves local excision. The author presents a case study involving a patient with an abnormally large, recurrent intramuscular lipoma of the left hallux, surgically excised and confirmed by pathology reports. iscussion includes a review of intramuscular lipoma. A review of the literature revealed only two previous reports.