The treatment of carcinoma in situ and squamous cell carcinoma of the conjunctiva with fractionated strontium-90 radiation in a population with a high prevalence of HIV
| Autor: | Gregory Hart, Clare Stannard, Karin Lecuona, Colin Cook, Maureen Duffield, Julie Wetter, James C. Rice |
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| Rok vydání: | 2014 |
| Předmět: |
Adult
Male medicine.medical_specialty Conjunctiva medicine.medical_treatment Population Brachytherapy Human immunodeficiency virus (HIV) Cryotherapy Conjunctival Neoplasms HIV Infections medicine.disease_cause Cellular and Molecular Neuroscience Young Adult Adjuvant therapy Medicine Humans education Dioptre Aged Retrospective Studies Aged 80 and over education.field_of_study business.industry Carcinoma in situ Middle Aged medicine.disease Combined Modality Therapy Sensory Systems Surgery Ophthalmology medicine.anatomical_structure Carcinoma Squamous Cell Strontium Radioisotopes Female Dose Fractionation Radiation Neoplasm Recurrence Local business Carcinoma in Situ Follow-Up Studies |
| Zdroj: | The British journal of ophthalmology. 99(9) |
| ISSN: | 1468-2079 |
| Popis: | Background This study explores the safety and efficacy of strontium 90 (Sr-90) brachytherapy as the sole adjuvant therapy for carcinoma in situ (CIS) and squamous cell carcinoma (SCC) of the conjunctiva in a high HIV prevalent area. Methods This is a retrospective case review of patients treated with 60 Gray Sr-90 brachytherapy in four divided doses after resection with a 2 mm margin and histological confirmation. Cryotherapy or alcohol debridement was not performed at the time of excision due to limited resources. Two plaque sizes, 8.5 mm and 18 mm, were used. Results Sixty-nine patients were treated and had a median follow-up of 27 months (range 6–127). Thirty-three (47.8%) were HIV-positive. CIS was present in 40.6% and SCC in 59.4%. The surgical margins were positive in 39 (56.5%). Twenty patients (29.0%) were treated with the 18 mm plaque and 49 (71.0%) with the 8.5 mm plaque. Eight (11.6%) patients developed a recurrence at a median of 5 months (range 2–40). Recurrences only occurred in patients treated with the 8.5 mm plaque (p=0.094). There was no significant effect of HIV status, positive margins or staging on the number of recurrences. Treatment side effects were a dry eye in five patients which was successfully managed with topical lubricants, and induced astigmatism of 1 dioptre of cylinder in one patient. Conclusions Sr-90 brachytherapy is safe and effective in preventing recurrences in ocular surface squamous neoplasia in a high HIV prevalent setting. The 18 mm plaque size is superior to the 8.5 mm plaque size. |
| Databáze: | OpenAIRE |
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