Allergic Aspergillus sinusitis and its association with allergic bronchopulmonary aspergillosis

Area of Science:

• Otolaryngology
• Allergy Immunology
• Pulmonology

Background:

• Allergic Aspergillus sinusitis (AAS) is a condition characterized by allergic mucin and mucoid impaction within the paranasal sinuses.
• It shares similarities with allergic bronchopulmonary aspergillosis (ABPA), another Aspergillus-related hypersensitivity disorder.
• AAS diagnosis relies on clinical, radiographic, and histopathologic findings, often in atopic individuals with recurrent sinonasal issues.

Purpose of the Study:

• To highlight the diagnostic criteria and clinical presentation of Allergic Aspergillus sinusitis (AAS).
• To emphasize the importance of recognizing the co-occurrence of AAS and Allergic Bronchopulmonary Aspergillosis (ABPA).
• To advocate for early diagnosis and appropriate management of AAS and ABPA to prevent disease progression.

Main Methods:

• Review of clinicopathologic entity of AAS.
• Analysis of diagnostic features including radiography, nasal endoscopy, and histopathology.
• Discussion of treatment approaches involving surgical debridement and corticosteroids.

Main Results:

• Radiographic evidence of pansinusitis and histopathologic confirmation of allergic mucin are key diagnostic indicators for AAS.
• Patients often present with a history of recurrent sinonasal polyposis and may have undergone multiple surgeries.
• The co-occurrence of AAS and ABPA is underrecognized, potentially due to separate specialist management.

Conclusions:

• A high index of suspicion is necessary for diagnosing AAS and ABPA, especially in patients with asthma, rhinosinusitis, and Aspergillus sensitization.
• Exclusion of ABPA in AAS patients and vice versa is critical for accurate diagnosis.
• Timely diagnosis and treatment of AAS and ABPA can alter disease course and prevent long-term sequelae.