Mobile submuscular mass resembling a hard-boiled egg: case report

Area of Science:

• Dermatology
• Pathology
• Surgical Oncology

Background:

• Encapsulated fat necrosis is a rare benign condition.
• Mobile masses on the back are uncommon and require thorough investigation.

Observation:

• A 68-year-old woman presented with a rare, mobile mass on her back.
• The mass exhibited an unusual stalked appearance, large size, and significant mobility beneath the anterior serratus muscle.

Findings:

• The observed mass shared characteristics with encapsulated fat necrosis.
• However, its unique morphology and mobility suggest an atypical presentation.

Implications:

• This case highlights the spectrum of encapsulated fat necrosis.
• It underscores the importance of considering rare presentations in the differential diagnosis of back masses.
• Further research into the etiology of such mobile masses is warranted.