The cyst of the canal of Nuck is an extremely rare female hydrocele, usually occurring in children, but also in adult women. It is caused by pathology of the canal of Nuck, which is the female equivalent to the male processus vaginalis. Due to its rarity and the lack of awareness among physicians, the cyst of the canal of Nuck is a seldom-encountered entity in clinical practice and is commonly misdiagnosed. We report on a case of cyst of the canal of Nuck in a 42-year-old woman, who presented with a painful swelling at her right groin. In addition, we conducted a review of the current available literature. This review gives an overview of the anatomy, pathology, diagnostics, and treatment of the cyst of the canal of Nuck. The aim of this review is not only to give a survey, but also to raise awareness of the cyst of the canal of Nuck and serve as a reference for medical professionals.

Endometriosis is a common benign gynecological condition defined as the presence of endometrial tissue in tissues outside the uterine cavity. Apart from the common sites of endometriosis, rare sites other have also been reported including the liver, the thoracic cavity, the muscles, nerves, and more rarely in a patent Nuck canal. We aim to evaluate the clinical presentation, diagnostic features, and management of the Nuck endometriosis. A meticulous search of three electronic databases was performed until May 2020 for articles reporting cases of Nuck endometriosis. A total of 36 patients from 20 studies were analyzed. Median age of patients was 36 years with 33 women being of reproductive age. A right-sided lesion was identified in 30 cases (83.3%), while all patients suffer from a groin mass with cyclic pain in a proportion of 22%. All the patients finally underwent surgery for investigation of the lesion and fixation of the defect. Five cases of malignancy were detected at final pathology. All of them were alive with a median reported overall survival of 37 months. Nuck endometriosis should be included in the differential diagnosis of female patients with groin swelling. An evaluation by a gynecologist is important when endometriosis is suspected.

Defects in the Canal of Nuck are rare abnormalities of the female genitalia, which are typically detected and repaired in young age. In the present report, a case of a Nuck cyst in a 40-year old female patient is described. Additionally, the current literature concerning cases of women with hydrocele of Nuck canal was systematically reviewed. A total of 16 case reports of 16 patients with Nuck hydrocele (mean age of 35.18 years), have been reported to date. A right inguinal mass was noted in 13 patients (81.3%) whereas in 3 patients a left-sided mass was noted. The surgical approach was open in 13 cases and laparoscopic in 3 cases. Two cases underwent hydrocelectomy and inguinal ring ligation, whereas in 7 cases a simple cystectomy was performed. In 2 cases the round ligament was excised along with the hydrocele. In one of these 2, ligamentum rotundum necrosis and presence of a haemorrhagic cyst of the canal of Nuck were identified. Hernia repair and hydrocelectomy was performed in 5 cases. A cyst of the Canal of Nuck is relatively rare, but should be considered during the diagnosis of inguinal masses in female patients.

BACKGROUND: Femoral hernias may - in some rare cases - contain the appendix, a phenomenon called de Garengeot hernia. It is usually an incidental finding in hernia repair. We found our case to be of interest because of the long standing femoral swelling before peracute appendicitis led to its removal.
METHODS: We present the case of a 71-year-old woman with a swelling of the right medial thigh for over more than 30 years. When the swelling suddenly grew in size and became tender, she was referred to our emergency department. Sonographically as well as clinically a femoral hernia was diagnosed. Intraoperatively, the appendix was found and open appendectomy as well as a hernioplasty was performed.
CONCLUSIONS: Open appendectomy is an elegant and safe procedure to repair a long standing de Garengeot hernia. Most case reports call for extensive diagnostics such as CT scan etc. We found a sonography of the femoral region to be conclusive.
CONCLUSIONS: Apart from the inherent risk of sudden incarceration in hernias, De Garengeot hernias can also develop peracute appendicitis years after their formation. This differential diagnosis needs to be taken into consideration in patients presenting with the clinical signs of a femoral hernia.