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  • Title: Nasal and Lacrimal Sac Histopathology in Patients With Systemic Sarcoidosis Undergoing External Lacrimal Drainage Surgery.
    Author: Stewart CM, Luthert PJ, Rose GE.
    Journal: Ophthalmic Plast Reconstr Surg; 2019; 35(3):247-250. PubMed ID: 30234834.
    Abstract:
    PURPOSE: To review the histological findings in the lacrimal sac and nasal mucosa from patients with sarcoidosis undergoing external lacrimal drainage surgery. METHODS: All patients undergoing external dacryocystorhinostomy at Moorfields Eye Hospital with a known history of sarcoidosis had biopsies taken from the lacrimal sac and/or nasal mucosa during surgery. These patients were identified from databases at Moorfields Eye Hospital and the Institute of Ophthalmology, and their clinical notes were reviewed retrospectively for intraoperative findings with a view to identifying common trends. The histological findings of each biopsy were reviewed and classified as showing granulomas, nongranulomatous inflammation, or nonspecific fibrosis. RESULTS: Forty patients (29 females; 72%) were known to have systemic sarcoidosis prior to surgery, and they underwent 60 external dacryocystorhinostomies. Paired histological samples were available from 49/60 (82%) procedures, nasal biopsies alone in 3 dacryocystorhinostomies (5%), and solely lacrimal sac biopsies in 8 (13%). The main site of systemic sarcoidosis was pulmonary involvement (19 patients; 48%). Recorded operative findings included 9 large lacrimal sac mucoceles (29%), a "thick" (26%) or "inflamed" (9.7%) lacrimal sac mucosa, and "thick" (36%) or "friable" (32%) nasal mucosa. Noncaseating granulomas were identified in 34/57 (60%) sacs, and 45/52 (87%) nasal tissues-this being in 31/49 (63%) of paired tissues. Chronic inflammation, without granulomas, was present in 20/57 (35%) lacrimal sacs but only in 5/52 (9.6%) of nasal biopsies. CONCLUSIONS: In patients with sarcoidosis undergoing external dacryocystorhinostomy, the characteristic histological feature-noncaseating granulomas-is present in most patients' lacrimal sac mucosa and in almost all of their nasal mucosae. The lacrimal sac and nasal mucosa often appears abnormal-thickened or friable-during surgery.
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