Recurring Giant Conjunctival Cyst Effectively Treated With 20% Trichloroacetic Acid

Giant conjunctival cysts, though rare, can cause significant discomfort and functional impairment due to their size as well as their potential for rupture and recurrence. We report the case of a 51-year-old female who presented with a recurrent giant conjunctival cyst in her left eye, experiencing considerable discomfort and pain upon eye movement. The cyst, located in the left eye, had previously recurred after surgical excision, though visual acuity remained 20/20 bilaterally. Treatment involved aspiration of the cyst, injection of 20% trichloroacetic acid (TCA), and irrigation of the cyst cavity, leading to complete resolution with no recurrence or symptoms after eight months. This case suggests that 20% TCA is a viable and effective treatment option for recurrent giant conjunctival cysts, providing a less invasive approach with a reduced risk of recurrence.