The device is comprised of a gelatin pill attached to a string. Patients swallow the pill, which dissolves to uncover a mildly abrasive sponge. The sponge is pulled back up through the esophagus, effectively collecting cells for a cytologic smear.
EoE requires multiple tissue samples over the course of treatment. Cytosponge has the potential to be more cost-effective than endoscopic biopsy, according to the report.
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