Piriform sinus

Piriform Sinus

The Piriform Sinus is a part of the pharynx, specifically located in the hypopharynx, which is the bottom part of the pharynx. It is an anatomical structure that plays a significant role in the human digestive system and respiratory system.

Anatomy[edit | edit source]

The piriform sinus is a pear-shaped recess located on either side of the laryngeal orifice. It is bounded medially by the aryepiglottic fold, laterally by the thyroid cartilage, and its base is formed by the cricoid cartilage. The piriform sinus serves as a pathway for food and air, directing these substances into the esophagus and trachea respectively.

Clinical Significance[edit | edit source]

Due to its location and function, the piriform sinus can be involved in various medical conditions. One of the most common is Piriform Sinus Fistula, a rare congenital anomaly that can lead to recurrent neck infections. Other conditions include piriform sinus cancer, a type of hypopharyngeal cancer, and foreign body impaction, where objects get stuck in the piriform sinus, often requiring medical intervention.

Diagnosis and Treatment[edit | edit source]

Diagnosis of piriform sinus conditions often involves imaging studies such as Computed Tomography (CT) scans, Magnetic Resonance Imaging (MRI) or Barium Swallow studies. Treatment varies depending on the condition, but may include antibiotics for infections, surgery for fistulas or cancer, and endoscopic removal of foreign bodies.