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DOI: 10.1148/rg.283075110
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RadioGraphics 2008;28:819-835
© RSNA, 2008

EDUCATION EXHIBIT

The Inguinal Canal: Anatomy and Imaging Features of Common and Uncommon Masses1

Priya R. Bhosale, MD, Madhavi Patnana, MD, Chitra Viswanathan, MD, and Janio Szklaruk, MD, PhD

1 From the Department of Radiology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Box 368, Houston, TX 77030. Presented as an education exhibit at the 2006 RSNA Annual Meeting. Received May 10, 2007; revision requested July 3; final revision received September 28; accepted October 9. All authors have no financial relationships to disclose. Address correspondence to P.R.B. (e-mail: Priya.bhosale{at}di.mdacc.tmc.edu).

A variety of benign and malignant masses can be found in the inguinal canal (IC). Benign causes of masses in the IC include spermatic cord lipoma, hematoma, abscess, neurofibroma, varicocele, desmoid tumor, air, bowel contrast material, hydrocele, and prostheses. Primary neoplasms of the IC include liposarcoma, Burkitt lymphoma, testicular carcinoma, and sarcoma. Metastases to the IC can occur from alveolar rhabdomyosarcoma, monophasic sarcoma, prostate cancer, Wilms tumor, carcinoid tumor, melanoma, or pancreatic cancer. In patients with a known malignancy and peritoneal carcinomatosis, the diagnosis of metastases can be suggested when a mass is detected in the IC. When peritoneal disease is not evident, a mass in the IC is indicative of stage IV disease and may significantly alter clinical and surgical treatment of the patient. A combination of the clinical history, symptoms, laboratory values, and radiologic features aids the radiologist in accurately diagnosing mass lesions of the IC. Supplemental material available at radiographics.rsnajnls.org/cgi/content/full/28/3/819/DC1.

© RSNA, 2008






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