“…Fever, flank pain, and hip pain often with antalgic gait are the classic symptoms, however, only 30% of the patients with poas abscess initially present with this triad [ 2 , 4 , 6 , 7 ]. As we see in this case, referred hip pain in patients with long-standing Cohn disease should always raise the suspicion for ongoing psoas abscess formation [ 8 - 10 ].…”