RT Journal Article SR Electronic T1 Spontaneous regression of conjunctival keratoacanthoma JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e228833 DO 10.1136/bcr-2018-228833 VO 12 IS 7 A1 Ghada J AlBayyat A1 Nandini Venkateswaran A1 Dan Arreaza A1 Sander R Dubovy A1 Anat Galor A1 Carol L Karp YR 2019 UL http://casereports.bmj.com/content/12/7/e228833.abstract AB An 83-year-old white man presented with a rapidly growing conjunctival mass in his left eye over the course of 1 month. While awaiting surgical intervention, the tumour underwent partial, spontaneous regression to half its original size. The lesion was ultimately excised with wide margins using a no-touch technique and application of cryotherapy to the corneal and conjunctival margins and scleral bed. Histopathological analysis revealed a conjunctival keratoacanthoma. To our knowledge, this is the first case documenting the partial, spontaneous regression of a conjunctival keratoacanthoma over a 5 week time course from the time of diagnosis to surgical excision.