Aseptic Splenic Abscesses With Concomitant Sweet Syndrome as Extraintestinal Manifestations of New-Onset Crohn's Disease

Splenic abscesses are typically infectious in nature but have rarely been reported as an extraintestinal manifestation of inflammatory bowel disease, particularly of Crohn's disease. In the United States, reported cases are even more scarce. We present a case of aseptic splenic abscess with concomitant Sweet syndrome in a middle-aged woman with newly diagnosed Crohn's disease. Extensive workup was required to reach final diagnosis, and she rapidly improved with corticosteroid therapy and has been maintained on risankizumab. We aim to contribute to limited data and heighten clinician awareness of these atypical extraintestinal manifestations.