Lesions Arising in or Involving the Iliopsoas GrooveIshigami, Kousei MD; Yoshimitsu, Kengo MD; Irie, Hiroyuki MD; Tajima, Tsuyoshi MD; Asayama, Yoshiki MD; Nishie, Akihiro MD; Hirakawa, Masakazu MD; Ushijima, Yasuhiro MD; Okamoto, Daisuke MD; Honda, Hiroshi MDJournal of Computer Assisted Tomography: November-December 2008 - Volume 32 - Issue 6 - p 975-981 doi: 10.1097/RCT.0b013e31815ade89 Musculoskeletal Imaging Abstract Author Information The purpose of this pictorial essay was to aid in the understanding of the anatomy of the iliopsoas groove by presenting imaging of various lesions affecting this region. Neurogenic tumors, lymphangiomas, lymphangioleiomyomatosis, and posterior iliac crest lymph node metastases may present as masses in the iliopsoas groove. Iliopsoas abscess secondary to infections of the adjacent structures, tumors of the iliopsoas muscle, and iliopsoas hematomas may directly extend to this region. From the Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan. Received for publication July 14, 2007; accepted September 8, 2007. Reprints: Kousei Ishigami, MD, Department of Clinical Radiology, GraduateSchool of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan (e-mail: Ishigamikousei@aol.com). © 2008 Lippincott Williams & Wilkins, Inc.