Introduction: One of the rare complications of peritoneal dialysis catheter placement is intestinal perforation, often with a late presentation. Clinical case:The case of a 28-year-old female with a history of placement of a Tenckhoff catheter in March 2019 is presented. She came to the emergency service in June 2020 for referring a catheter discharge by anal region.Conclusions: Due to the low incidence of this complication, there is no standard management. In general, removal of the catheter with primary closure of the defect appears to be the best alternative.

Antecedentes: El síndrome de Rapunzel es la formación de un tricobezoar que se extiende más allá del intestino delgado. Desde su descubrimiento, pocos casos se han reportado en la literatura y con características clínicas variables, provocando complicaciones importantes como obstrucción intestinal. Actualmente, la laparotomía se considera el tratamiento de elección. Caso clínico: Paciente de sexo femenino que acude por presentar peritonitis de repetición asociada a catéter de diálisis peritoneal, anorexia, náuseas, vómito, sin canalizar ni presentar evacuaciones, tumoración en epigastrio, ansiedad, tricotilomanía y tricofagia. Se realiza el diagnóstico de síndrome de Rapunzel y se decide su ingreso a quirófano.

Walled-off pancreatic necrosis is defined as a necrotic collection with a defined wall, which generally occurs in 15% of patients in the fourth week after acute pancreatitis. Actually, open surgery is reserved for selected cases, with minimally invasive treatments such as image-assisted percutaneous drainage or endoscopic ultrasound being the procedures of choice. However, in developing countries the open approach continues to be an effective therapeutic alternative. We present the case of a 47-year-old male patient with no significant history who developed severe acute pancreatitis secondary to hypertriglyceridemia and who later developed walled-off pancreatic necrosis as a late complication. As a treatment, a debridement of the necrotic tissue with marsupialization was performed using the bradley III technique, secondary to the procedure, a pancreatic fistula was developed. After 8 weeks of hospitalization, in which he had a favourable response to surgical treatment, with spontaneous closure of the fistula without complications. Surgical management of late complications of acute pancreatitis remains controversial. Although minimally invasive procedures are the first option nowadays, in developing countries, open necrosectomy remains a good option for the treatment of these types of complications.

Primary lymphomas of the appendix occur in 0.015% of all gastrointestinal lymphomas. The most common manifestation is acute appendicitis secondary to luminal obstruction. The most common is immunophenotype B low-grade non-Hodgkin lymphoma. A 53-year-old male, with a previous three-week surgical history due to acute appendicitis, histopathological report of acute appendicitis and lymphoid hyperplasia. Later, he was admitted, with abdominal pain in the right iliac fossa, an abdominal ultrasound and simple abdominal tomography were performed, with suspicion of residual abscess. Surgical intervention is decided, observing paracecal tumor in the emergency site of the appendix, the tumor is removed. Pathological study that reports an appendicular base infiltrated by mucosa-associated lymphoma. The diagnosis of appendicular tumors is mostly, intraoperatively incidental. It is necessary to have the diagnostic possibility when performing an appendectomy, since it changes the prognosis and treatment of the patient.