What question did this study set out to answer?

To evaluate the effectiveness of topical timolol in treating exit-site granulomas in peritoneal dialysis patients.

Topical Timolol for Peritoneal Dialysis Catheter Exit‐Site Granulomas: First Report of Successful Use in CAPD Patients

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Case reports demonstrate topical timolol's effectiveness against granulomas in CAPD patients, suggesting a promising non-invasive treatment.

To evaluate the effectiveness of topical timolol in treating exit-site granulomas in peritoneal dialysis patients.
Two patients on continuous ambulatory peritoneal dialysis with exit-site granulomas were treated with topical 0.5% timolol maleate applied three times weekly.
Clinical response was assessed by monitoring serial photographs.
Complete resolution of the granuloma occurred within 3 weeks for one patient and within 2 months for the other.
No local or systemic adverse effects were reported, and no exit-site infections occurred during treatment.

S et al. (2026) studied this question.

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Case reports demonstrate topical timolol's effectiveness against granulomas in CAPD patients, suggesting a promising non-invasive treatment.