Case Report Infected Hydrocele of the Canal of Nuck · 2019. 7. 31. · Hydrocele of the canal of...

Hindawi Publishing CorporationCase Reports in UrologyVolume 2013, Article ID 275257, 3 pageshttp://dx.doi.org/10.1155/2013/275257

Case ReportInfected Hydrocele of the Canal of Nuck

Parkash Mandhan,1,2 Zaid Raouf,3 and Khalid Bhatti3

1 Division of Paediatric Surgery, Department of Surgery, Sultan Qaboos University Hospital, 123 Muscat, Oman2Department of Surgery, Hamad General Hospital, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar3 Department of Surgery, Sultan Qaboos University Hospital, 123 Muscat, Oman

Correspondence should be addressed to Parkash Mandhan; pmandhan@gmail.com

Received 12 September 2013; Accepted 7 November 2013

Academic Editors: G. Kara Gedik, B. Rekhi, and F. Sanguedolce

Copyright © 2013 Parkash Mandhan et al. This is an open access article distributed under the Creative Commons AttributionLicense, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properlycited.

Hydrocele of the canal of Nuck in children is rare. It may present as incarcerated inguinal hernia and necessitates emergencyexploration. Risk of infection in hydrocele of the canal of nuck is very rare. We present a case report of a 5-year-old girl whopresented with a left tender inguinolabial region swelling with fever, tachycardia, and mild dehydration. The clinical features weresuggestive of strangulated left inguinal hernia and further imaging and surgical exploration revealed it to be an infected hydroceleof the canal of Nuck. High ligation and hydrocelectomywere performed.Hydrocele of the canal of Nuck in a female child presentingwith an inguinal swelling should be considered in differential diagnosis.

1. Introduction

Contents of the inguinal canal vary between female and malepopulation. During development, in the female fetus, roundligament of the uterus descends into the inguinal canal tothe labium major. The peritoneal fold that descends withthe round ligament is named the canal of Nuck. If thiscommunication fails to close, it results in an indirect herniaor a hydrocele [1].

Hydrocele of the canal of Nuck is not a common entity asonly isolated case reports are published in the literature [1–6]. Infection is an uncommon complication of hydroceles inchildren, and until now only 5 cases have been reported in theEnglish language literature, all in boys [2, 7].

We present a case of infected hydrocele of the canal ofNuck in a 5-year-old girl, initially pictured as strangulatedinguinal hernia and later diagnosed as a case of infectedhydrocele of the canal of Nuck.We emphasize to consider thisas a differential diagnosis in girls with tender inguinolabialswelling.

2. Case Report

A 5-year-old girl presented to the emergency with history ofpainful mass in the left inguinolabial region noticed a week

before presentation. The child has a positive history of trivialtrauma in school while playing with other children. Theinguinal swelling and pain got gradually worse over the week.There was no history of recent illness in near future. Exam-ination revealed temperature of 38∘C, heart rate of 140/m,and mild dehydration. Abdominal and chest examinationswere unremarkable. Local examination revealed a 6 × 3 cmirreducible tense swelling in the left inguinolabial region,withoverlying skin redness and edematous. Blood investigationsrevealed white blood cell count of 14000/mm3, C-reactiveprotein 50, normal electrolytes, and coagulation profile. Herurinalysis was normal. Blood culture and sensitivity was sentand was reported normal. An ultrasound of inguinal regionperformed in the emergency room revealed a cystic mass inleft inguinal region containing fluid in the upper part andfluid with internal echoes in the lower part of mass, and therewas no free fluid noted in the abdomen. After resuscitationwith fluids and administration of IV antibiotics, shewas takento the operating room for exploration. Operative findingsincluded a cystic mass in the left inguinal canal extendingdown to the ipsilateral labia majora (Figure 1(a)), cyst con-taining dark brown fluid in the proximal part, and clottedblood with dark fluid in the distal part (Figure 1(b)). Thecystic swelling was confirmed to be an encysted hydroceleof canal of the Nuck with no evidence of associated inguinal

2 Case Reports in Urology

(a) (b) (c)

Figure 1: Operative images of left inguinolabial region showing (a) swelling extending down to ipsilateral labium majus, (b) tense encystedcystic swelling containing dark-brown fluid, and (c) excised and opened hydrocele.

hernia. The cyst was easily isolated from the surroundingedematous tissue planes and after complete separation highligation of the canal of Nuck was performed and cyst wasexcised (Figure 1(c)). Postoperative course was uneventful.Microbiology of fluid collected from cyst was negative andcytology showed foamy macrophages and scattered lym-phocytes and neutrophils. Histopathology of excised cystrevealed inflammatory cells infiltrated in the hydrocele sacwith some degenerate blood and cholesterol clefts. No epithe-lial lining was seen and calretinin staining showed a fewmesothelial cells. The histology findings were consistent withinfected hydrocele of the canal of Nuck. In followup at 6weeks, 6 months and 18 months after surgery, patient is welland there is no swelling or recurrence on the operated side.

3. Discussion

In the female child, hydrocele of the canal of Nuck usuallypresents as a painless, translucent, fluctuating, and nonre-ducible swelling in the inguinal area and labium majora.Counseller and Black classified hydrocele of canal of Nuckinto 3 types [8]. The most common type, which correspondsto encysted hydrocele of the cord inmale, is onewith no com-munication with peritoneal cavity forming an encysted fluidcollection along the tract of descent, from the inguinal ringto the vulva.The second type corresponds to communicatinghydrocele in male when there is a persistent communicationwith the peritoneal cavity. A third type is a combination of thetwo as a result of the inguinal ring constricting the hydrocelelike a belt so that part is communicating and part is enclosed,giving this the name of hour glass type. In our case, thefindings were corresponding with type I encysted hydrocele.

The infection in the hydrocele of the canal of Nuck infemale children is not known and has been reported only inboys where it has been considered to happen due to seedingfrom intraperitoneal source through patent processus [2, 7].In our patient, this hypothesis of intraperitoneal seeding isnot applicable as there were no peritoneal signs on initialabdominal examination and also ultrasound was negative

for any intra-abdominal fluid. However, in our view theinitial trauma she had in school may have been directlyresponsible forminor bleeding inside the processus vaginalis,later this small hematoma got infected and caused associatedsymptoms, pain and tenderness on the affected inguinolabialside mimicking for strangulated inguinal henna or inguinalabscess.

Hydrocele of the canal of Nuck should be considered indifferential diagnosis for inguinal swelling in a girl. Clinicallythis may mimic indirect inguinal hernia, femoral hernia,abscess, tender adenopathy, Bartholin’s cyst, posttraumatichematoma, and rare entities such as cystic lymphangioma,neuroblastoma metastasis in groin, and ganglion [1, 9, 10].Further evaluation with ultrasound and MRI has been uti-lized to reach correct diagnosis [6]. In our case, clinical find-ings and ultrasound facilitated the prompt diagnosis and weproceed with surgical exploration without any further delay.

In conclusion, a hydrocele of the canal of Nuck thoughrare should be considered in the differential diagnosis infemale children presenting with an inguinal swelling. Ascer-taining a definitive diagnosis on physical examination maynot be possible; hence, further evaluation with ultrasoundimaging will be helpful. Surgery is mandatory for finaldiagnosis and treatment.

References

[1] O. B. Lao, R. J. Fitzgibbons Jr., and R. A. Cusick, “Pediatricinguinal hernias, hydroceles, and undescended testicles,” Sur-gical Clinics of North America, vol. 92, no. 3, pp. 487–504, 2012.

[2] E. A. Ameh and E. S. Garba, “Infected hydrocoele of the canalof Nuck in a neonate,”Urologia Internationalis, vol. 71, no. 2, pp.226–227, 2003.

[3] F. De Meulder, M. Wojciechowski, G. Hubens, and J. Ramet,“Female hydrocele of the canal of Nuck: a case report,”EuropeanJournal of Pediatrics, vol. 165, no. 3, pp. 193–194, 2006.

[4] C. Huang, C. Luo, H. Chao, S. Chu, Y. Yu, and J. Yen, “Thepresentation of asymptomatic palpable movable mass in femaleinguinal hernia,”European Journal of Pediatrics, vol. 162, no. 7-8,pp. 493–495, 2003.

Case Reports in Urology 3

[5] K. Janssen, D. Klinkner, and T. Kumar, “Encysted hydrocele ofcanal of Nuck: a case report with review of literature,” Journalof Surgical Technique and Case Report, vol. 3, no. 2, pp. 97–98,2011.

[6] E. Soh, K. Sheah, and K. O. Ong, “Hydrocele of the canalof Nuck: ultrasound and MRI findings,” Reports in MedicalImaging, vol. 4, no. 1, pp. 15–17, 2011.

[7] N. D. Kutin, D. L. Schwartz, H. B. So, and J. M. Becker,“Idiopathic infant pyoceles,” Journal of Pediatric Surgery, vol. 21,no. 5, pp. 441–442, 1986.

[8] V. S. Counseller and B. M. Black, “Hydrocele of the canal ofNuck: report of seventeen cases,” Annals of Surgery, vol. 113, no.4, pp. 625–630, 1941.

[9] S. K. Pandit, K. N. Rattan, S. Budhiraja, and R. S. Solanki,“Cystic lymphangioma with special reference to rare sites,”Indian Journal of Pediatrics, vol. 67, no. 5, pp. 339–341, 2000.

[10] D. Poenaru, D. A. Jacobs, and I. Kamal, “Unusual findings inthe inguinal canal: a report of four cases,” Pediatric SurgeryInternational, vol. 15, no. 7, pp. 515–516, 1999.

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Case Report Infected Hydrocele of the Canal of Nuck · 2019. 7. 31. · Hydrocele of the canal of...

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