Hydrocoele of the canal of Nuck
3-year old girl with painful palpable mass in the left inguinal region and reddish swelling of the labium majus.
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Infected hydrocoele of the canal of Nuck. A hydrocoele is the result of a failed obliteration of the inguinal part of the processus vaginalis (so-called canal of Nuck) resulting in hydrocoele.
The surgeon decided to treat conservatively with antibiotics, and the swelling gradually decreased. Follow-up after 1 year showed complete resorption of the hydrocoele.
Infection (abcedation) of the hydrocoele is most likely the explanation of the wall thickening and wall enhancement in this case; in most cases hydrocoeles are reported to have a thin wall. The hydrocoele doesn't look purely cystic on the T2-images, this might be due to some intraluminal débris caused by the infection.