Ultrasound diagnosis of acute appendicitis complicating De Garengeot's hernia

Strangulated femoral hernia with appendicitis: A rare case of De Garengeot's hernia

INTRODUCTION AND IMPORTANCE

De Garengeot hernia is a rare case of a femoral hernia. It occurs when a femoral hernia contains a vermiform appendix that may be inflamed and sometimes necrotic, and this requires emergency surgery. However, the hernia is usually discovered by chance in the operating theater, which poses an additional challenge for surgeons.

CASE PRESENTATION

A 64-year-old man presented with a 1-week history of a painful right groin lump. The lump is irreducible and painful on exert a week ago. Ultrasound imaging showed a 1.5 × 2 cm loculated turbid liquid collection containing an edematous intestinal loop measuring 8 mm in diameter that was suspected to be the vermiform appendix. Therefore, appendectomy was performed through the hernia sac. After that, the hernia was repaired using the McVay technique and 2.0 nylon sutures. One day after the operation, the patient was discharged, and he returned to the clinic after 10 days without any complications.

CLINICAL DISCUSSION

The patient has a history of chronic obstructive pulmonary disease (COPD), which is a risk factor for a hernia. He had to live with the right femoral hernia for ten years until it became painful and irreversible. Ultrasound revealed what appears to be an appendix. To avoid possible consequences of complicated appendicitis and strangulated hernia, emergency surgery was the appropriate choice for our patient case.

CONCLUSION

The presence of an appendix in the femoral hernia poses a diagnostic and therapeutic challenge to surgeons, due to the atypical clinical picture and the lack of efficacy of radiographic methods in diagnosing the condition.

Clinicopathological characteristics of De Garengeot hernia: six case reports and literature review

BACKGROUND

De Garengeot hernia, wherein the appendix is present within a femoral hernia, is a rare disease; therefore, the clinicopathological features remain to be clarified. This study aimed to reveal the clinicopathological characteristics of De Garengeot hernia.

CASE PRESENTATION

Six patients who underwent appendectomy and herniorrhaphy between 1999 and 2018 were included. The incidence of De Garengeot hernia was 3.2% among the 182 femoral hernias that required surgery during the study period. The median age of the patients was 78 years, and five patients were women. The median body mass index was 20.1. Patients frequently had fever or elevated CRP level. Preoperative diagnoses based on computed tomography were femoral (n = 3), inguinal (n = 2), and De Garengeot (n = 1) hernias. Emergency and elective surgeries were performed in four and two patients, respectively. Histopathological examination of the resected appendix showed gangrenous appendicitis (n = 3), perforated appendicitis (n = 2), and appendiceal ischemia (n = 1) in the patients. Postoperatively, one patient developed sepsis.

CONCLUSIONS

Preoperative diagnosis of De Garengeot hernia is often difficult, and patients frequently have severe appendicitis. Precise diagnosis is required, and emergency surgery should be considered depending on the severity of appendicitis.