RESUMO
BACKGROUND: Liposarcomas represent ~9.8-16% of soft tissue sarcomas, with the extremities and retroperitoneum being the primary sites of occurrence. While liposarcoma in the inguinal region is uncommon, few reported cases originate from the retroperitoneum and protrude into the scrotum through the inguinal canal. Here, we present a case of a retroperitoneal liposarcoma with prolapse from the left inguinal canal into the scrotum following hernia repair with a mesh plug. CASE PRESENTATION: A 55-year-old male patient underwent a CT scan for a suspected recurrent inguinal hernia, which revealed a sizeable adipose-dense tumor by the left kidney extruded through the left inguinal canal surrounding the scrotum. The patient had undergone mesh plug repair for a left inguinal hernia at another hospital one year ago and noticed ipsilateral inguinal swelling after the hernia repair. The patient was referred to our hospital. The tumor resection was completed with combined resection of potentially involved organs: left side colon, left kidney, and left adrenal gland. Also, complete excision of the tumor was accomplished through surgical resection of the posterior wall of the inguinal canal, the mesh plug, and the tumor extending into the scrotum. Given the nearly complete absence of the inguinal canal's posterior wall and the anterior wall's torn state, sutures were employed to close the external obturator tenosynovitis. Additionally, the inguinal ligament was closed using a tension-free incision technique. Only a mesh was subsequently placed. The resected tumor measured 47 × 30 × 15 cm and 7.5 kg in weight. After surgical resection, a retroperitoneal liposarcoma diagnosis was established. After 2 years and 6 months following the surgical resection, no recurrence has been observed for either liposarcoma or inguinal hernia. CONCLUSION: The previous inguinal hernia in this case must be a prolapse of retroperitoneal liposarcoma. Thus, it is recommended to conduct a preoperative examination, which should include a CT scan, since the presence of a fatty mass within the hernia may indicate the presence of a retroperitoneal liposarcoma. Even if a preoperative diagnosis cannot be made, a long-term prognosis can be expected if the retroperitoneal liposarcoma can be completely resected at reoperation.
RESUMO
BACKGROUND: As laparoscopic surgery becomes more prevalent worldwide, Meckel's diverticula are increasingly being discovered incidentally during surgery. There is no consensus on whether to follow up or resect such diverticula, which are usually asymptomatic. In cases of transabdominal preperitoneal inguinal hernia repair, resection of such a diverticulum might add the risk of mesh infection. Thus, it is unclear whether simultaneous intestinal resection is advisable. CASE PRESENTATION: A 64-year-old man diagnosed with a left indirect inguinal hernia underwent laparoscopic inguinal hernia repair, during which a 2-cm Meckel's diverticulum located contralateral to the mesentery of the ileum approximately 30 cm from Bauhin's valve was detected incidentally. Because of the potential risk of future complications such as hemorrhage, diverticulitis, or tumor development, wedge resection of the ileum was performed extracorporeally through an extended umbilical port site after completion of the hernia repair. Pathological examination revealed a neuroendocrine tumor (G1) in Meckel's diverticulum, which was successfully resected without any mesh infection or postoperative complications. DISCUSSION: Our patient's clinical course raises two important issues. First, a Meckel's diverticulum detected incidentally during laparoscopic surgery should be resected promptly because malignant tumors within such diverticula have frequently been reported. Second, simultaneous resection with hernia repair using mesh seems to be as safe as other clean-contaminated surgery. CONCLUSIONS: Management of incidental Meckel's diverticula should be selected by appropriate assessment for the risk of malignancy and complications.