{Reference Type}: Case Reports {Title}: Periocular fibrosarcoma with lipogranulomatous conjunctivitis in a cat. {Author}: Foster TM;Newbold GM;Miller EJ;Jeong YJ;Premanandan C;Husbands BD; {Journal}: Vet Ophthalmol {Volume}: 0 {Issue}: 0 {Year}: 2024 Jun 11 {Factor}: 1.444 {DOI}: 10.1111/vop.13249 {Abstract}: A 9-year-old, female spayed domestic short-haired cat was presented with a 4-year history of bilateral lipogranulomatous conjunctivitis (LGC), which was confirmed via histopathology. Thirteen months following the initial biopsy, the cat was presented with a rapidly progressive mass lesion of the palpebral conjunctiva of the right eye. A surgical debulking, followed 1 month later by exenteration after marked regrowth of the mass confirmed fibrosarcoma. This case report is the first to describe a cat with chronic bilateral LGC that later developed a unilateral fibrosarcoma within the eyelid tissue of the right eye. Fibrosarcoma should be considered a differential in any cat with chronic LGC that develops a rapidly progressive mass in the eyelid.