The azygos lobe, an incidental finding in computer tomography

Area of Science:

• Anatomical variations
• Thoracic imaging
• Embryology

Background:

• The azygos lobe is an anatomical variant of the lung's upper lobe, typically found in the right lung.
• It results from an atypical course of the azygos vein during embryogenesis, forming the azygos fissure.
• While well-documented, its occurrence is relatively rare.

Purpose of the Study:

• To present a case of an incidentally discovered azygos lobe in a 62-year-old male via computed tomography (CT).
• To emphasize the clinical significance of recognizing the azygos vein and lobe for surgical safety and accurate diagnosis.
• To highlight the need for increased awareness and knowledge dissemination regarding this anatomical variation.

Main Methods:

• Case report presentation.
• Review of relevant anatomical and clinical literature.
• Diagnostic imaging via computed tomography (CT).

Main Results:

• An incidental finding of an azygos lobe in a 62-year-old male patient during a CT scan.
• The azygos vein's atypical course was identified, creating the characteristic azygos fissure.
• The case underscores potential confusion with pathological conditions and associations with other thoracic abnormalities.

Conclusions:

• The azygos lobe, though a known variant, requires greater awareness among medical professionals, particularly thoracic surgeons.
• Knowledge of this anomaly can prevent iatrogenic injuries and misdiagnoses during surgery.
• Continued education on such anatomical variations is essential for improving patient outcomes in thoracic medicine.