title: RS3PE Syndrome with Iliopsoas Bursitis Distinguished from an Iliopsoas Abscess Using a CT-guided Puncture.
abstract: A 55-year-old man was diagnosed with remitting seronegative symmetrical synovitis with pitting edema (RS3PE) syndrome. Contrast-enhanced computed tomography for cancer screening showed a mass with low-density centers with an enhanced rim in the left iliopsoas muscle. We suspected an iliopsoas abscess and performed computed-tomography-guided puncture of the mass. Both Gram staining and the culture of the fluid were negative. We diagnosed the patient with RS3PE syndrome with iliopsoas bursitis and administered low-dose corticosteroids without antibiotics. The symptoms, including left hip pain, quickly disappeared following treatment. Clinicians should be aware that iliopsoas bursitis may resemble an iliopsoas abscess. As a result, it is important to make an accurate differential diagnosis.
authors.affiliation: Department of Immunology and Rheumatology, Nagasaki University Graduate School of Biomedical Sciences, Japan.
authors.forename: Shoichi
authors.initials: S
authors.lastname: Fukui
authors.forename: Naoki
authors.initials: N
authors.lastname: Iwamoto
authors.forename: Sosuke
authors.initials: S
authors.lastname: Tsuji
authors.forename: Masataka
authors.initials: M
authors.lastname: Umeda
authors.forename: Ayako
authors.initials: A
authors.lastname: Nishino
authors.forename: Yoshikazu
authors.initials: Y
authors.lastname: Nakashima
authors.forename: Takahisa
authors.initials: T
authors.lastname: Suzuki
authors.forename: Yoshiro
authors.initials: Y
authors.lastname: Horai
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Koga
authors.forename: Shin-ya
authors.initials: SY
authors.lastname: Kawashiri
authors.forename: Kunihiro
authors.initials: K
authors.lastname: Ichinose
authors.forename: Yasuko
authors.initials: Y
authors.lastname: Hirai
authors.forename: Mami
authors.initials: M
authors.lastname: Tamai
authors.forename: Hideki
authors.initials: H
authors.lastname: Nakamura
authors.forename: Tomoki
authors.initials: T
authors.lastname: Origuchi
authors.forename: Atsushi
authors.initials: A
authors.lastname: Kawakami
mesh_terms: D000893:Anti-Inflammatory Agents / Q000627:therapeutic use*; D002062:Bursitis / Q000150:complications / Q000175:diagnosis* / Q000188:drug therapy / Q000473:pathology; D003287:Contrast Media / Q000008:administration & dosage; D003937:Diagnosis, Differential; D004487:Edema / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011239:Prednisolone / Q000627:therapeutic use*; D016659:Psoas Abscess / Q000150:complications / Q000175:diagnosis* / Q000188:drug therapy / Q000473:pathology; D011677:Punctures / Q000379:methods; D013577:Syndrome; D013585:Synovitis / Q000209:etiology; D014057:Tomography, X-Ray Computed / Q000379:methods
chemical_list: D000893:Anti-Inflammatory Agents; D003287:Contrast Media; D011239:Prednisolone