Treatment of ocular surface squamous neoplasia: Case reportof ocular surface squamous neoplasia: Case report

Abstract

Abstract. Aim: Ocular surface squamous neoplasia (OSSN) is a term that encompasses a wide and varied spectrum of very rare dysplastic disease of cornea and conjunctiva, ranging from conjunctival intraepithelial neoplasia (CIN), carcinoma in situ (CIS) to invasive squamous cell carcinoma (SCC) of conjunctiva and/or cornea. Case report: In our case report, we present squamous cell carcinoma of the conjunctiva and cornea in a 78-year old man. Our diagnostic algorithm included: slit lamp and fundus examination, gonioscopy, impression cytology (IC) andmagnetic resonance imaging (MRI). The patient underwentsurgical excisional biopsy of the lesion and intraoperativecryotherapy of the cut conjunctival edges and sclera-conjuctiva base region. Following surgical therapy, we started topical 0.02 % (0.2 mg/ml) Mitomycin C (MMC) application daily for 14 days. Control excisional biopsy of conjunctival edge and abrasion of involved cornea were performed following the last day of topical chemotherapy. Our controlexcisional biopsyrevealed tumor positive corneal tissue and the second cycle of topical 0.04 % (0.4 mg/ml) MMCchemotherapy wasstarted for next 3 weeks. The patient has been followed-up for 20 months through monthly-based visits, with no recurrence of the disease. Conclusions: OSSN is a surgical challenge requiring a specialized 'no-touch' (NT) technique. In our case, the combination of surgical excision with intraoperative cryotherapy and topical chemotherapy with 0.02 % MMC application for 14 days, completed with second cycle of topical 0.04 % MMC drops for the next 21 days given the positive control biopsy, proved to be a good choice for eradication of OSSN with accurate further monitoring of the patient.Key words: conjunctiva; cornea; eye neoplasms; mitomycin; squamous cell neoplasms Sažetak. Cilj: Skvamozna neoplazija površine oka (OSSN) vrlo je rijetka displastična bolest rožnice i spojnice oka, sa slikom u rasponu od konjunktivalne intraepitelne neoplazije (CIN), karcinoma in situ (CIS) do invazivnog skvamocelularnog konjunktive i/ili rožnice (SCC). Prikaz slučaja: Opisali smo slučaj invazivnog skvamocelularnog karcinoma konjunktive i rožnice kod 78-godišnjeg pacijenta. Dijagnostički plan uključio je kompletan oftalmološki pregled, gonioskopiju, impresijsku citologiju i magnetsku rezonanciju (MR), te je potvrđena dijagnoza karcinoma pločastih stanica bez širenja u orbitu i ostala intraokularna tkiva. Pacijent je podvrgnut kirurškoj ekscizijskoj biopsiji lezije, uz krioterapiju konjunktivalnih rubova i skleralne baze lezije. Nakon kirurške terapije, proveli smo topičku terapiju 0,02 % (0,2 mg/ml) Mitomycinom C (MMC) tijekom 14 dana. Kontrolna ekscizijska biopsija ruba spojnice i strugotine zahvaćene rožnice provedena je posljednjeg dana topičke kemoterapije. Zbog pozitivnog nalaza tumorskih stanica u rožničnom tkivu nastavljena je topička kemoterapija 0,04 % (0,4 mg/ml) MMC-om tijekom sljedeća 3 tjedna. Pacijent je redovito praćen tijekom posljednjih 20 mjeseci bez recidiva bolesti. Zaključci: OSSN je kirurški izaz...

Comparison of Bacillus Calmette Guerin (BCG) Vaccine and Mitomycin C as an Adjuvant Therapy after the Surgical Excision of Bovine Ocular Squamous Cell Carcinoma

“…Rayner and Van (2006) and Malalana et al, (2010) who observed, equine ocular squamous cell carcinoma was successfully treated with Mitomycin eye drops without any recurrence after LASER ablation. Chen et al, (2004), Gupta and Muecke (2010), Walia et al, (2016), Merlak et al, (2017) and Antonietta Blasi et al, (2018) treated ocular surface squamous neoplasia using Mitomycin without any recurrence in humans.…”