Differential Diagnosis for Lump near Clavicle after Clavicle Surgery

Single Most Likely Diagnosis

• Hematoma: This is the most likely diagnosis due to the recent surgery. Hematoma formation is a common complication after surgical procedures, especially in areas with rich blood supply like the clavicle region.

Other Likely Diagnoses

• Seroma: Fluid accumulation at the surgical site can occur after clavicle surgery, leading to a lump. This is a common issue in post-surgical patients.
• Abscess: An infection at the surgical site can cause a lump, which may be accompanied by signs of infection such as redness, warmth, and purulent discharge.
• Suture or staple reaction: Sometimes, the body can react to the sutures or staples used in surgery, causing a lump or swelling at the site.

Do Not Miss Diagnoses

• Malignancy (e.g., metastasis or primary bone tumor): Although rare, it's crucial not to miss a potential malignancy, especially if the lump persists or grows over time. A thorough investigation, including imaging and possibly a biopsy, may be necessary.
• Deep vein thrombosis (DVT): While less common in this context, a DVT could potentially cause swelling or a lump in the area, especially if it occurs in the subclavian vein, which is near the clavicle.

Rare Diagnoses

• Osteomyelitis: A bone infection can occur after surgery, leading to a lump or swelling near the clavicle. This is less common but requires prompt treatment to avoid serious complications.
• Erythema nodosum or other inflammatory conditions: Rare inflammatory conditions could potentially cause lumps or nodules in the skin, including near the clavicle after surgery. These would be less likely but should be considered if other diagnoses are ruled out.