Multimodality imaging features of Canal-of-Nuck hydrocele in adults.

Canal of Nuck abnormalities are common in pediatric population but may rarely present in adults. Hydrocele of the Canal of Nuck is the most common presentation in adult population. These may be symptomatic or found incidentally on imaging. We review the embryology and present imaging features of Canal of Nuck hydroceles in this case-based review article, and highlight the features on various imaging modalities, such as ultrasound, CT (Computed Tomography), MRI (Magnetic Resonance Imaging) and PET (Positron Emission Tomography). Radiologists should be aware of these findings in their practice and be able to recognize these congenital abnormalities.