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Lesions Arising in or Involving the Iliopsoas Groove

Ishigami, 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 MD

Journal of Computer Assisted Tomography:
doi: 10.1097/RCT.0b013e31815ade89
Musculoskeletal Imaging

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.

Author Information

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:

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