Pseudocyst of the auricle

Pseudocyst of the auricle' is a benign, non-inflammatory condition characterized by the accumulation of fluid between the cartilage and the perichondrium of the auricle (outer ear). This condition typically presents as a painless, fluctuant swelling on the anterior aspect of the auricle.

Presentation

Patients with a pseudocyst of the auricle usually present with a painless swelling on the auricle, which may vary in size. The swelling is typically soft and fluctuant to touch. It is most commonly seen in adult males and can affect one or both ears.

Pathophysiology

The exact cause of pseudocyst of the auricle is not well understood. It is believed to result from minor trauma or repetitive pressure to the ear, leading to the accumulation of serous fluid between the cartilage and the perichondrium. This fluid collection does not contain inflammatory cells, distinguishing it from other conditions such as perichondritis or auricular hematoma.

Diagnosis

Diagnosis is primarily clinical, based on the characteristic appearance and location of the swelling. Ultrasonography can be used to confirm the presence of fluid and to differentiate pseudocyst from other conditions such as auricular hematoma or chondritis. Aspiration of the fluid may also be performed for diagnostic purposes.

Treatment

Treatment options for pseudocyst of the auricle include:

• **Aspiration and Compression:** Aspiration of the fluid followed by the application of a compression dressing to prevent re-accumulation of fluid.
• **Incision and Drainage:** Making a small incision to drain the fluid, followed by the placement of a pressure dressing.
• **Surgical Excision:** In recurrent cases, surgical removal of the pseudocyst may be necessary.

Prognosis

The prognosis for pseudocyst of the auricle is generally good with appropriate treatment. However, recurrence is common, and multiple treatments may be required to achieve a permanent resolution.

See also

• Auricle
• Perichondritis
• Auricular hematoma
• Chondritis