Systematic review and meta-analysis on outcomes for endoscopic versus external dacryocystorhinostomy

Orbit
June HuangRichard J Harvey

Abstract

Dacryocystorhinostomy (DCR) is commonly performed for epiphora, dacryocystitis and during tumor surgery. External (EXT-DCR) and endoscopic DCR (END-DCR) are both practiced. END-DCR was initially performed with laser (EL-DCR) but has shifted to careful bone removal with mechanical drills (EM-DCR). High level evidence from comparative cohorts was sought to compare outcomes. Medline (1966 - January 28th, 2013) and Embase (1980 - January 28(th), 2013) were searched for comparative studies (RCT/cohorts) of END-DCR to EXT-DCR for acquired nasolacrimal duct (NLD) obstruction. Primary outcome was DCR success, defined as resolution of symptoms and/or patent NLD on irrigation or dacroscintography. Secondary outcomes were scarring, infection and post-operative bleeding. Meta-analysis was performed with the Mantel-Haenszel Method and presented as Risk Ratios (RR) with Confidence Intervals (CI). The search identified 3582 studies and 355 were reviewed after screening. Full text review yielded 19 studies (4 RCTs and 15 cohorts). Overall, EXT-DCR had slightly better success rates than END-DCR (RR 0.96, CI 0.93-1.00). However, EM-DCR outcomes were comparable to EXT-DCR (RR 1.02, CI 0.98-1.06), whereas EL-DCR had poorer outcomes (RR 0.85, CI 0....Continue Reading

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