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https://www.readbyqxmd.com/read/28275607/intracorneal-and-intraocular-invasion-of-ocular-surface-squamous-neoplasia-after-intraocular-surgery-report-of-two-cases-and-review-of-the-literature
#1
Juan C Murillo, Anat Galor, Michael C Wu, Natasha K Kye, James Wong, Ibrahim O Ahmed, Madhura Joag, Nabeel Shalabi, William Lahners, Sander Dubovy, Carol L Karp
PURPOSE: The aim of this paper was to describe 2 cases of ocular surface squamous neoplasia (OSSN) of the conjunctiva with intracorneal and intraocular extension following intraocular surgery. METHODS: We conducted a clinical pathological retrospective case series. RESULTS: Case 1 underwent cataract surgery in the setting of an unnoticed adjacent OSSN. An excisional biopsy with cryotherapy and intraoperative mitomycin C was subsequently performed, confirming OSSN...
January 2017: Ocular Oncology and Pathology
https://www.readbyqxmd.com/read/28275599/ocular-surface-squamous-neoplasia-associated-with-atopic-keratoconjunctivitis
#2
Ankit Shah, Edgar M Espana, Arun D Singh
PURPOSE: To describe 2 cases of invasive squamous cell carcinoma that originated in the setting of severe atopic keratoconjunctivitis (AKC). METHODS: Case one involved a 73-year-old male with atopic eczema and severe AKC who developed a limbal lesion suspicious for ocular surface squamous neoplasia (OSSN). Slit-lamp examination was significant for a new sessile lesion in the temporal limbal region of the left eye. The lesion was treated with excisional biopsy and cryotherapy...
January 2017: Ocular Oncology and Pathology
https://www.readbyqxmd.com/read/28184236/diagnosis-and-medical-management-of-ocular-surface-squamous-neoplasia
#3
Ibrahim O Sayed-Ahmed, Sotiria Palioura, Anat Galor, Carol L Karp
INTRODUCTION: Topical chemotherapy has gained popularity among clinicians for the treatment of ocular surface squamous neoplasia (OSSN). The principal topical chemotherapy agents used in the management of OSSN are interferon-α2b, 5-fluorouracil, and mitomycin C. High-resolution optical coherence tomography (HR-OCT) is a non-invasive technique that can differentiate OSSN from other ocular surface lesions. AREAS COVERED: This review highlights the current regimens and diagnostic modalities used in managing OSSN...
2017: Expert Review of Ophthalmology
https://www.readbyqxmd.com/read/28129301/immunosuppression-as-a-possible-risk-factor-for-interferon-nonresponse-in-ocular-surface-squamous-neoplasia
#4
Noy Ashkenazy, Carol L Karp, Gaofeng Wang, Carolina Mercado Acosta, Anat Galor
PURPOSE: The mechanism by which ocular surface squamous neoplasia (OSSN) responds to topical interferon-alpha-2b (IFNα2b) is not known. We report the cases of 3 immunosuppressed patients whose tumors did not respond to topical IFNα2b therapy. The purpose of this series is to shed light on potential mechanisms of IFNα2b in OSSN. METHODS: Retrospective case series of 3 immunosuppressed patients whose biopsy-proven OSSN did not respond to topical IFNα2b treatment...
April 2017: Cornea
https://www.readbyqxmd.com/read/28129293/ocular-surface-epithelial-atypia-mimicking-squamous-neoplasia-in-association-with-ulcerative-colitis
#5
Sally S Ong, Scott D Walter, Xi Chen, Gargi K Vora, Melissa Daluvoy, Alan D Proia, Prithvi Mruthyunjaya
PURPOSE: Inflammatory bowel disease may be associated with extraintestinal manifestations. We report a case of severe reactive epithelial atypia resembling ocular surface squamous neoplasia (OSSN) in a patient with ulcerative colitis (UC). METHODS: Case report. RESULTS: A 32-year-old woman presented with sequential, progressive keratoconjunctival lesions in the left and right eyes, and both lesions were excised. Anterior segment optical coherence tomography demonstrated features similar to OSSN, whereas histological examination revealed severe reactive epithelial atypia mimicking severe dysplasia...
January 26, 2017: Cornea
https://www.readbyqxmd.com/read/27994810/prevalence-and-severity-of-ocular-surface-neoplasia-in-african-nations-and-need-for-early-interventions
#6
REVIEW
Jacob W Reynolds, Margaret L Pfeiffer, Omar Ozgur, Bita Esmaeli
Ocular surface squamous neoplasia (OSSN) is a common ocular surface tumor with an increased incidence in African countries (3.4 and 3.0 cases/year/100,000). Despite its potential for vision loss and death, OSSN remains largely neglected by both eye and HIV care programs in Africa. The purpose of this review is to identify the barriers to timely diagnosis and early interventions for OSSN in Africa. PubMed searches were conducted targeting previous use of topical chemotherapy (interferon alpha 2b, Mitomycin-C, 5-Fluorouracil) and Human papillomavirus (HPV) vaccination in Africa...
October 2016: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/27941046/topical-1-5-fluoruracil-as-a-sole-treatment-of-corneoconjunctival-ocular-surface-squamous-neoplasia-long-term-study
#7
Raffaele Parrozzani, Luisa Frizziero, Sara Trainiti, Ilaria Testi, Giacomo Miglionico, Elisabetta Pilotto, Stella Blandamura, Ambrogio Fassina, Edoardo Midena
AIMS: To report long-term clinical outcome of topical 1% 5-fluoruracil (5-FU) as a sole treatment of ocular surface squamous neoplasia (OSSN). METHODS: 41 patients affected by OSSN were included. Each patient underwent full ophthalmological examination at baseline, with cytological or histological confirmation. Patients were treated by topical chemotherapy with 1% 5-FU four times a day for 4 weeks. One course was defined as 4 weeks of topical chemotherapy. Adjunctive courses were administered after 1 month of chemotherapy-free interval...
December 9, 2016: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/27935054/damaging-effects-of-ultraviolet-radiation-on-the-cornea
#8
Naomi C Delic, J Guy Lyons, Nick Di Girolamo, Gary M Halliday
The cornea sits at the anterior aspect of the eye and additionally to the skin, is highly exposed to ultraviolet radiation (UVR). The cornea blocks a significant proportion of UVB from reaching the posterior structures of the eye. However, UVA can penetrate the full thickness of the cornea, even reaching the anterior portion of the lens. Epidemiological data indicate that UVR is a contributing factor for a multitude of corneal diseases of the cornea including pterygium, photokeratitis, climatic droplet keratopathy, (CDK) and ocular surface squamous neoplasia (OSSN), although the pathogenic mechanisms of each require further elucidation...
December 9, 2016: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/27905329/recombinant-interferon-alpha-2b-for-ocular-surface-squamous-neoplasia-an-efficient-and-cost-effective-treatment-modality-in-asian-indian-patients
#9
Swathi Kaliki, Swati Singh, Sadiya Iram, Dharani Tripuraneni
PURPOSE: The purpose was to study the efficacy of interferon alpha 2b (INF α2b) in the treatment of ocular surface squamous neoplasia (OSSN) and analyze its cost-effectiveness in India. STUDY DESIGN: This was a retrospective study of thirty patients with OSSN treated with topical INF α2b (1 MIU/cc) ± perilesional INF α2b (5 MIU/cc). RESULTS: The tumor involved cornea (n = 9, 30%), conjunctivo-limbal-corneal surface (n = 19, 63%), or bulbar conjunctiva (n = 2, 7%)...
October 2016: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/27832940/concomitant-simple-limbal-epithelial-transplantation-after-surgical-excision-of-ocular-surface-squamous-neoplasia
#10
Swathi Kaliki, Faraz Ali Mohammad, Prerana Tahiliani, Virender S Sangwan
PURPOSE: To compare the surgical outcomes of ocular surface squamous neoplasia (OSSN) following wide excisional biopsy with and without primary simple limbal epithelial transplantation (p-SLET). DESIGN: Nonrandomized clinical study with historical controls. METHODS: setting: Single-institutional study. PATIENTS: Eight patients who underwent wide excisional biopsy of OSSN without p-SLET (historical controls) and 7 patients with p-SLET (cases)...
February 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/27826936/ocular-surface-squamous-neoplasia-as-the-initial-presenting-sign-of-human-immunodeficiency-virus-infection-in-60-asian-indian-patients
#11
Swathi Kaliki, Saurabh Kamal, Saba Fatima
PURPOSE: To study the importance of routine human immunodeficiency virus (HIV) screening in patients with ocular surface squamous neoplasia (OSSN) and describe their clinical features and management. METHODS: Retrospective study. RESULTS: Of 228 cases of OSSN screened for HIV by enzyme-linked immunosorbent assay, 86 (38%) patients were HIV positive. Of these 86 patients, 60 (70%) were unaware of their HIV-positive status prior to HIV screening...
November 8, 2016: International Ophthalmology
https://www.readbyqxmd.com/read/27800176/anterior-segment-imaging-in-ocular-surface-squamous-neoplasia
#12
REVIEW
Sally S Ong, Gargi K Vora, Preeya K Gupta
Recent advances in anterior segment imaging have transformed the way ocular surface squamous neoplasia (OSSN) is diagnosed and monitored. Ultrasound biomicroscopy (UBM) has been reported to be useful primarily in the assessment of intraocular invasion and metastasis. In vivo confocal microscopy (IVCM) shows enlarged and irregular nuclei with hyperreflective cells in OSSN lesions and this has been found to correlate with histopathology findings. Anterior segment optical coherence tomography (AS-OCT) demonstrates thickened hyperreflective epithelium with an abrupt transition between abnormal and normal epithelium in OSSN lesions and this has also been shown to mimic histopathology findings...
2016: Journal of Ophthalmology
https://www.readbyqxmd.com/read/27749454/nodulo-ulcerative-ocular-surface-squamous-neoplasia-in-6-patients-a-rare-presentation
#13
Swathi Kaliki, Suzanne K Freitag, James Chodosh
PURPOSE: To describe clinical presentation and histopathological features of a nodulo-ulcerative variant of ocular surface squamous neoplasia (OSSN). METHODS: Retrospective study. RESULTS: Six patients were identified with a nodulo-ulcerative variant of OSSN. Mean age at presentation was 56 years. One patient was immunosuppressed because of human immunodeficiency virus infection. The initial misdiagnosis was necrotizing scleritis/sclerokeratitis (n = 4), intraepithelial neoplasia (n = 1), and chalazion (n = 1)...
March 2017: Cornea
https://www.readbyqxmd.com/read/27714903/risk-factors-for-ocular-surface-squamous-neoplasia-in-kenya-a-case-control-study
#14
Stephen Gichuhi, Ephantus Macharia, Joy Kabiru, Alain M'bongo Zindamoyen, Hillary Rono, Ernest Ollando, Joseph Wachira, Rhoda Munene, Timothy Onyuma, Walter G Jaoko, Mandeep S Sagoo, Helen A Weiss, Matthew J Burton
OBJECTIVE: To determine modifiable risk factors of ocular surface squamous neoplasia (OSSN) in Kenya using disease-free controls. METHODS: Adults with conjunctival lesions were recruited at four eye care centres in Kenya and underwent excision biopsy. An equal number of controls having surgery for conditions not affecting the conjunctiva and unrelated to ultraviolet light were group-matched to cases by age group, sex and eye care centre. Associations of risk factors with OSSN were evaluated using multivariable logistic regression to estimate odds ratios (ORs) and 95% confidence intervals (95% CIs)...
December 2016: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/27661075/exfoliative-cytology-in-the-diagnosis-of-ocular-surface-squamous-neoplasms
#15
Kim Vieira Kayat, Paulo Elias Correa Dantas, Sérgio Felberg, Maria Antonieta Galvão, Mauro Ajaj Saieg
PURPOSE: Surface tumors of the eye comprise an ample spectrum of diseases with various clinical manifestations. Diagnosis has been traditionally achieved through core biopsies, but cytology is an innovative, fast, and minimally invasive method. The objective of this study was to investigate the use of exfoliative cytology as an alternative method for the detection of ocular surface squamous neoplasm (OSSN). METHODS: Exfoliative cytology of the lesions was performed by collecting smears using plastic brushes followed by smearing the cells onto slides and subsequently fixing them in 90% alcohol...
January 2017: Cornea
https://www.readbyqxmd.com/read/27584160/differential-expression-of-stem-cell-markers-in-ocular-surface-squamous-neoplasia
#16
Dilip Kumar Mishra, Uppala Veena, Swathi Kaliki, Abhinav Reddy Kethiri, Virender S Sangwan, Mohammed Hasnat Ali, Milind N Naik, Vivek Singh
Ocular Surface Squamous Neoplasm (OSSN) is the neoplasia arising from the conjunctiva, cornea and limbus. OSSN ranges from mild, moderate, severe dysplasia, carcinoma in situ (CIS) to squamous cell carcinoma (SCC). Recent findings on cancer stem cells theory indicate that population of stem-like cell as in neoplasia determines its heterogeneity and complexity leading to varying tumor development of metastatic behavior and recurrence. Cancer stem cell markers are not much explored in the cases of OSSN. In the present study, we aim to evaluate the expression of stem cells using stem cell markers mainly p63, ABCG2, c-KIT (CD117) and CD44 in OSSN tissue, which could have prognostic significance...
2016: PloS One
https://www.readbyqxmd.com/read/27442321/primary-simple-limbal-epithelial-transplantation-along-with-excisional-biopsy-in-the-management-of-extensive-ocular-surface-squamous-neoplasia
#17
Vikas Mittal, Purvasha Narang, Vikas Menon, Ruchi Mittal, Santosh Honavar
PURPOSE: To describe the utility of simple limbal epithelial transplantation (SLET) along with tumor excision in the management of extensive ocular surface squamous neoplasia (OSSN) to avoid limbal stem cell deficiency (LSCD). METHODS: This case report describes the management of a 75-year-old man clinically diagnosed with OSSN involving more than 3 quadrants of limbus. The excisional biopsy of tumor along with 4-mm healthy margin led to a complete loss of the limbus, which was restored by limbal epithelial cell transplantation using the SLET technique in the same setting...
July 20, 2016: Cornea
https://www.readbyqxmd.com/read/27330387/high-frequency-of-squamous-intraepithelial-neoplasia-in-pterygium-related-to-low-ultraviolet-light-exposure
#18
Pablo Zoroquiain, Samir Jabbour, Sultan Aldrees, Natalia Villa, Vasco Bravo-Filho, Helena Dietrich, Patrick Logan, Miguel N Burnier
PURPOSE: The aim of this study was to determine the frequency of clinically unsuspected ocular surface squamous neoplasia (OSSN) in cases of biopsied pterygium (PT). METHODS: We reviewed 15,016 cases presented at the Henry C. Witelson Ocular Pathology Laboratory during the period 1993-2013. All cases with a clinical diagnosis of PT were included. Histopathological diagnoses were reviewed and demographic data were retrieved from histopathological request forms. All cases associated with OSSN were re-evaluated independently by two ocular pathologists...
April 2016: Saudi Journal of Ophthalmology: Official Journal of the Saudi Ophthalmological Society
https://www.readbyqxmd.com/read/27300720/-complications-in-the-treatment-of-ocular-surface-squamous-neoplasia-with-interferon-%C3%AE-%C3%A2-2b-in-rheumatoid-arthritis
#19
E Torres Suárez, R Pinheiro, N Schrage
BACKGROUND: Interferon α‑2b (IFN α‑2b) is an established and well-tolerated treatment for ocular surface squamous neoplasia (OSSN). METHOD: Report of complications in two patients with OSSN and rheumatoid arthritis treated with adjuvant topical IFN α‑2b. RESULTS: One patient developed a scleral melt and the other one severe keratitis. After discontinuing treatment with IFN α‑2b both patients showed considerable improvement. CONCLUSION: Immunosuppressed patients with OSSN under topical IFN α‑2b should be closely monitored for early detection of complications...
June 14, 2016: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/27198842/topical-fluorouracil-after-surgery-for-ocular-surface-squamous-neoplasia-in-kenya-a-randomised-double-blind-placebo-controlled-trial
#20
Stephen Gichuhi, Ephantus Macharia, Joy Kabiru, Alain M'bongo Zindamoyen, Hilary Rono, Ernest Ollando, Joseph Wachira, Rhoda Munene, John Maina, Timothy Onyuma, Mandeep S Sagoo, Helen A Weiss, Matthew J Burton
BACKGROUND: Ocular surface squamous neoplasia (OSSN) is an aggressive eye tumour particularly affecting people with HIV in Africa. Primary treatment is surgical excision; however, tumour recurrence is common. We assessed the effect of fluorouracil 1% eye drops after surgery on recurrence. METHODS: We did this multicentre, randomised, placebo-controlled trial in four centres in Kenya. We enrolled patients with histologically proven OSSN aged at least 18 years. After standard surgical excision, participants were randomly allocated to receive either topical fluorouracil 1% or placebo four times a day for 4 weeks...
June 2016: Lancet Global Health
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