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Il Giornale Italiano di Radiologia Medica 2018 Novembre-Dicembre;5(6):752-6

DOI: 10.23736/S2283-8376.18.00130-4


language: Italian

Cyst of the canal of Nuck: ultrasound and magnetic resonance imaging assessment

Mariangela CARBONE , Mariantonietta MONTEDURO, Emanuela LACALENDOLA, Laura MAPPA, Rocco VIRELLI, Amato A. STABILE IANORA

Sezione di Radiologia, Dipartimento Interdisciplinare di Medicina, Università degli Studi di Bari/Policlinico, Bari, Italia


The Nuck canal cyst is a rare cause of inguinal swelling in women, due to an incomplete obliteration of the Nuck canal, residue of a peritoneal evagination associated with the round ligament, corresponding to the peritoneo-vaginal process of men. A 28-year-old woman presented with diffuse abdominal pain and swelling in the right inguinal region, partially reducible to palpation. The ultrasound investigation showed an elongated, multiloculated cystic lesion with anecogen content, which did not change during dynamic maneuvers and showed no vascular signal at Eco-color-Doppler, compatible with hydrocele or cyst of the Nuck canal. Magnetic resonance imaging allowed to confirm the absence of a communication with the peritoneal cavity, important for correct management. The diagnosis of pathologies of the Nuck canal is not simple because of their rarity and it requires a differential diagnosis with the most frequent causes of inguinal swelling in women, first of all inguinal hernia. Ultrasound is the first and sometimes the only step for the characterization of this lesion, being also able to use dynamic tests for evaluating morphological and content variations. In selected cases, for an accurate preoperative planning, an evaluation by magnetic resonance can be carried out. The radiologist must know and accurately characterize the Nuck canal pathologies, especially in cases of uncomplete obliteration of the duct’s proximal portion, due to the risk of herniation and strangulation of the abdomino-pelvic organs.

KEY WORDS: Ultrasonography - Magnetic resonance imaging - Groin - Testicular hydrocele

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