Conjunctival biopsy in sarcoidosis

Area of Science:

• Ophthalmology
• Rheumatology
• Immunology

Background:

• Systemic sarcoidosis is an inflammatory disease that can affect various organs.
• Ocular manifestations are common in sarcoidosis, but diagnosis can be challenging.
• Conjunctival biopsy is a potential diagnostic tool for ocular sarcoidosis.

Purpose of the Study:

• To evaluate the diagnostic yield of conjunctival biopsies in patients with suspected systemic sarcoidosis.
• To determine the incidence of positive granulomatous lesions in conjunctival biopsies.
• To assess the utility of random, bilateral conjunctival biopsies for sarcoidosis diagnosis.

Main Methods:

• Prospective study design.
• 28 patients with suspected systemic sarcoidosis underwent 55 conjunctival biopsies.
• Histopathological examination for granulomatous lesions.

Main Results:

• Positive granulomatous lesions were found in 71.4% of proven sarcoidosis cases (10/14 patients).
• Positive granulomatous lesions were found in 28.5% of suspected sarcoidosis cases (4/14 patients).
• Higher diagnostic yield observed in proven cases compared to suspected cases.

Conclusions:

• Random, bilateral conjunctival biopsies are a valuable diagnostic method for systemic sarcoidosis.
• Biopsies should be performed early in the diagnostic process for presumed sarcoidosis.
• Conjunctival biopsy offers a minimally invasive approach to confirm sarcoidosis.