Imaging Features of Primary Immunodeficiency Disorders.

Area of Science:

• Immunology
• Radiology
• Pulmonology

Background:

• Primary immunodeficiency disorders (PIDs) are uncommon defects of the immune system (humoral, combined, innate) often undiagnosed.
• PIDs present with recurrent infections, autoimmune disorders, lymphoproliferative diseases, congenital anomalies, and increased malignancy risk.
• Recurrent respiratory infections in PIDs frequently lead to chronic lung disease, such as bronchiectasis, making cardiothoracic imaging crucial.

Purpose of the Study:

• To highlight the critical role of cardiothoracic imaging in diagnosing Primary Immunodeficiency Disorders (PIDs).
• To discuss the thoracic manifestations and specific imaging features of common PIDs.
• To emphasize how recognizing imaging characteristics can expedite PID diagnosis, prognostication, and treatment.

Main Methods:

• Review of thoracic manifestations in common Primary Immunodeficiency Disorders (PIDs).
• Focus on specific imaging features pertinent to individual PID types.
• Discussion of conditions like granulomatous lymphocytic interstitial lung disease in common variable immunodeficiency and thymoma in Good syndrome.

Main Results:

• Cardiothoracic imaging is essential for identifying lung damage (e.g., bronchiectasis) resulting from recurrent infections in PIDs.
• Distinct radiologic findings are associated with specific PIDs, aiding in differential diagnosis.
• Familiarity with imaging characteristics improves diagnostic accuracy and therapeutic guidance for PIDs.

Conclusions:

• Thoracic imaging provides vital clues for diagnosing Primary Immunodeficiency Disorders (PIDs), especially those with recurrent respiratory infections.
• Specific imaging findings can help differentiate between various PIDs and guide management.
• Integrating imaging findings with clinical presentation is key to timely and accurate PID diagnosis.