In the inguinal hernia, REM is a rare complication and can cause complications such as intestinal obstruction, gangrene, and peritonitis due to delayed detection (1). Imaging findings can be helpful in suspicious cases.
REM imaging findings report a specific sign called "preperitoneal hernia sac sign", which shows the incarcerated intestine placed in hernia sac inside the preperitoneal space and close to the hernia sac (3).
According to Nason LM, Mixter, several criteria are required for REM to occur:
1) Hernia sac has a narrow neck that makes it difficult for the intestine to come out of the hernia sac.
2) The hernia sac is in motion inside the inguinal canal.
3) The hernia sac should be sufficiently able to return to the parietal peritoneum and thus allow the sac to move into the peritoneal cavity without moving the intestinal loops (4)
There is usually a history of difficult reductions, which the last reduction is more difficult and is followed by the persistence of symptoms or the temporary improvement of symptoms (2). Our patient was in accordance with the above. Inguinal hernia of our case was reduced twice in emergency room and the patient was discharged with personal consent after the last reduction performed the day before admission.
REM is one of the rare forms of acute intestinal obstruction that is encountered by a limited number of surgeons and is unknown to many radiologists.
On clinical exaxmination, a painful mass can be felt in the proximal inguinal canal, above the inguinal ring, or in the lower quadrant on the reduced side.
Prompt surgical treeatment is essential because any delay will exacerbate the symptoms and cause inevitable complications (1). Of course, no masses or lesions were felt in our patient, and the patient only had RLQ tenderness.
So far, limited cases of REM have been reported in which, after a hernia reduction, the patient symptoms were worsened and hernia sac had entered the abdomen completely. However, in very rare cases, hernia was reduced by patients themselves (5).
In this case study, a patient with a history of recurrent inguinal hernia was reported. The patient himself reduced his hernia the last time. In CT of the abdomen and pelvis, evidence of sac wall and small intestine fibrosis was seen as closed loop.
Despite the incarceration of the small intestinal loop inside the hernia sac in the abdominal space, the incarcerated part of the intestine was not resected, and the patient was monitored. Finally, the patient was discharged in good general condition and without any complications.