Concha bullosa

Concha Bullosa

CT scan showing a concha bullosa

Concha bullosa is a common anatomical variation of the nasal turbinates, specifically the middle turbinate. It is characterized by the presence of an air-filled cavity within the turbinate, which can vary in size and shape. This condition is often discovered incidentally during imaging studies for other nasal or sinus issues.

Anatomy

The nasal turbinates are long, narrow shelves of bone that protrude into the nasal cavity. They are covered by mucous membranes and play a crucial role in humidifying and filtering the air we breathe. The middle turbinate is one of the three turbinates found in the nasal cavity, the others being the superior and inferior turbinates.

A concha bullosa occurs when the middle turbinate becomes pneumatized, meaning it develops an air-filled cavity. This can occur on one or both sides of the nasal cavity.

Clinical Significance

While a concha bullosa is often asymptomatic, it can sometimes contribute to nasal obstruction or sinusitis. This is because the enlarged turbinate can block the normal drainage pathways of the paranasal sinuses, leading to the accumulation of mucus and subsequent infection.

In some cases, a concha bullosa may also cause headaches or facial pain due to pressure effects.

Diagnosis

Concha bullosa is typically diagnosed through imaging studies, such as a CT scan of the sinuses. The CT scan can clearly show the air-filled cavity within the middle turbinate, allowing for accurate diagnosis.

Treatment

Treatment for concha bullosa is not always necessary, especially if the condition is asymptomatic. However, if it causes significant nasal obstruction or contributes to recurrent sinusitis, surgical intervention may be considered.

The most common surgical procedure is a turbinectomy or turbinoplasty, where part of the turbinate is removed or reshaped to improve airflow and sinus drainage.

Related Pages

• Nasal turbinates
• Sinusitis
• Turbinectomy
• CT scan