Primary omental torsion – A rare case report

Primary omental torsion occurs when the mobile thickened segment of the omentum rotates around a proximal fixed point in the absence of any association or secondary intra abdominal pathology and is reported rarely in literature. Our patient was a 55 year old postmenopausal woman who presented with acute abdominal pain on the right side for 3 days and was diagnosed to have primary omental torsion.

Torsion of a parasitic myoma that developed after abdominal myomectomy

Iatrogenic parasitic myomas are rare. The condition is defined by the presence of multiple smooth-muscle tumorous nodules in the peritoneal cavity. This may be attributable to seeding of myoma particles during uterine surgery. The clinical course is usually indolent. The disease is often asymptomatic and is usually discovered only incidentally. A 38-year-old woman who had undergone abdominal myomectomy 7 months prior presented with acute abdominal pain and a huge pelvic mass. We performed exploratory laparotomy. A parasitic mass 17 cm in diameter with a twisted omental pedicle was identified. En bloc excision of the mass and omentum was performed, followed by total abdominal hysterectomy. Histopathological examination of multiple sections revealed features compatible with an infarcted leiomyoma. Thus, we present a very rare case of an iatrogenic, rapidly growing parasitic myoma complicated by omental torsion (which caused the acute abdominal pain). We also offer a literature review.

Omental Torsion: A Review of Literature and Case Report.

Eitel first described omental torsion in 1899. Omental torsion is rarely diagnosed preoperatively, knowledge of this pathology is important to the surgeon as it mimics common acute surgical abdomen. For this reason in the absence of diagnosed preexisting abdominal pathology including cyst, tumors, foci of intra-abdominal inflammation, postsurgical wounds or scarring and hernia sacs, omental torsion can present a surprise. Exploratory laparotomy represents the diagnostic and definitive therapeutic procedure, presently laparoscopy is the first choice procedure.

Primary omental torsion diagnosed during hysterectomy

Omental torsion is a rare cause of acute abdominal pain. It presents with nonspecific symptoms and signs of an acute abdomen, making it difficult to diagnose preoperatively, because symptoms mimic those caused by other conditions such as appendicitis, cholecystitis, diverticulitis, and other gynecologic diseases. Computed tomography is an effective and useful method to diagnose and exclude other acute abdominal conditions. Our case presented with sudden right upper abdominal pain with tenderness, rebound tenderness, mild fever (37.2degrees C), increased erythrocyte sedimentation rate (37 mm/hr), increased high-sensitivity C-reactive protein level (5.97 mg/dL). Computed tomography showed a large, well-circumscribed heterogeneous fatty mass and a 7.3 cm subserosal myoma. We could not exclude the myoma as the cause of acute abdominal pain, so we performed an emergency operation with suspicion of omental torsion or necrotic degeneration of the myoma. During the operation, we diagnosed primary omental torsion with infarction and subserosal myoma without secondary degeneration.

Torsión omental como causa de abdomen agudo pediátrico / Omental torsion a rare cause of acute abdomen in children

INTRODUCCIÓN: La torsión omental constituye una causa infrecuente de dolor abdominal del niño, con una frecuencia relativa estimada de un caso por cada 200 cirugías realizadas por sospecha de apendicitis. Se sugiere que la incidencia de esta patología estaría en aumento paralelo a la obesidad infantil, y al mayor conocimiento diagnóstico con imagenología. PRESENTACIÓN DE CASOS: Cinco pacientes fueron tratados en el Hospital Luis Calvo Mackenna con diagnóstico postoperatorio de torsión o infarto omental entre enero de 2006 y enero de 2011.Todos se presentaron con dolor abdominal agudo en el cuadrante inferior derecho acompañado de otros síntomas fuertemente sugerentes de una apendicitis aguda. En ninguno de los 5 casos se obtuvo diagnóstico imagenológico de urgencias, por lo que recibieron manejo exclusivamente quirúrgico (omentectomía con o sin apendicectomía, vía minilaparotomía o laparoscopía), con resultados satisfactorios. El estudio histopatológico demostró congestión, hemorragia y/o necrosis omental, e inflamación periférica apendicular. DISCUSIÓN: Con un mayor acceso a imágenes y conocimiento de esta patología por el equipo médico, se hace posible realizar el diagnóstico de forma preoperatoria, lo que es decisivo para posibilitar diferentes alternativas terapéuticas y puede evitar la cirugía restringiéndola a casos seleccionados.

INTRODUCTION: Omental torsion is a rare cause of abdominal pain in children, with an estimated incidence of one for every 200 appendectomies performed. A rise in that number has been projected, parallel to a higher prevalence of childhood obesity and a higher accuracy in diagnostic imaging. CASE REPORT: Five patients had a postoperative diagnosis of omental torsion in Hospital Luis Calvo Mackenna between January of 2006 and January 2011. All of them started an acute abdominal pain in right iliac fossa and general symptoms that resembled acute appendicitis. None of them had a correct diagnosis by emergency imaging; thereby a surgical resolution – open or laparoscopic omentectomy with or without appendectomy - was indicated with good outcomes. Histopathological study showed congestion, hemorrhage and/or omental necrosis, and periappendicular inflammation. DISCUSSION: With more readily available imaging studies and a higher index of suspicion, a preoperative diagnosis of omental torsion could be achieved, potentially avoiding unnecessary surgery.

Torsión primaria de epiplón: caso clínico / Primary omental torsion: report of one case

We report a 40 years old female consulting in the emergency room for abdominal pain and a mass in the left lower quadrant. An abdominal CAT sean showed an omental torsion. The patient was operated, excising the involved omentum. The postoperative period was uneventful and the patient was discharged three days after admission.

El objetivo de este trabajo es presentar el caso clínico de una paciente con torsión de epiplón manejado en nuestra institución. Se trata de una paciente de sexo femenino de 40 años de edad, que se presenta al servicio de urgencias por clínica de dolor abdominal de una semana de evolución asociado a masa abdominal en flanco izquierdo, en quien se realiza tomografía que revela cambios compatibles con torsión de epiplón por lo cual es llevada a cirugía realizándose resección de todo el omento.

A case of colonic and omental lipomatosis and omental torsion presenting with abdominal pain / 대한내과학회지

A lipoma, one of the most commonly encountered submucosal tumors in the gastrointestinal tract, usually presents as one or a few lesions. Lipomatous polyposis, which is defined as the presence of multiple lipomas in the intestinal wall, is rare. Here, we report a case of colonic lipomatous polyposis that involved not only the colon, but also the omentum and skeletal muscle. The patient presented with right lower quadrant abdominal pain and was diagnosed using colonoscopy and computed tomography (CT). The abdominal pain caused by omental torsion due to an omental lipoma resolved after conservative treatment without surgical intervention.

Torsión omental: una causa de abdomen agudo / Omental torsion: an acute abdomen etiology

Introducción. La torsión omental es una causa poco común de abdomen agudo que usualmente semeja apendicitis aguda. La mayoría de los casos son diagnosticados durante laparotomía. Puede ser primaria o bien secundaria; la primera se presenta sin evidencia de patología intraabdominal preexistente. Material y métodos. Del primero de enero del 2001 al 31 de diciembre del 2005, se llevó a cabo un estudio descriptivo, observacional, longitudinal y retrospectivo en pacientes con diagnóstico preoperatorio de apendicitis aguda con el objetivo de conocer la incidencia de apendicitis aguda confirmada por anatomopatología y la incidencia de torsión omental. Resultados. Se incluyeron 2,135 pacientes sometidos a cirugía con el diagnóstico preoperatorio de apendicitis aguda de los cuales hubo confirmación histológica posoperatoria en el 91.71% de los casos. Se encontraron 8 casos de torsión omental, para una incidencia del 0.37%, que se diagnosticaron todos transoperatoriamente. Se detectó mayor frecuencia en las primera y cuarta décadas de la vida; el 75% se observó en adultos. El 62.5% de los casos presentó torsión secundaria. Discusión. La torsión omental es una causa poco frecuente de abdomen agudo cuyo principal diagnóstico diferencial es apendicitis aguda. En nuestra serie, encontramos una incidencia de torsión omental dos veces superior a la reportada en la literatura (0.16 contra 0.37), así como una diferencia en cuanto a su distribución por grupos de edad y por sexo.

INTRODUCTION: Omental torsion is an uncommon cause of acute abdomen, usually mimicking acute appendicitis; almost all described cases are diagnosed with laparotomy. It can be a primary or secondary condition. Primary torsion occurs without evidence of intrabdominal abnormalities. MATERIAL AND METHODS: Retrospective, observational, longitudinal, descriptive study carried out between January 2001 and December 2005. Patients diagnosed as acute appendicitis were included and we assessed diagnostic accuracy by means of anatomopathology and omental torsion incidence. RESULTS: 2135 patients were included; diagnostic accuracy was 91.71%. Eight omental torsion cases were identified, with an incidence of 0.37% and all diagnosed with laparotomy. Patients in the first and fourth decades of life were mostly affected; 75% of the cases were observed in adults, and 62.5% displayed secondary torsion. DISCUSION: Omental torsion is a rare cause of acute abdomen. Acute appendicitis is a frequent differential diagnosis that should be taken into account. In our series, we found a two-fold higher incidence of omental torsion, compared with previously reported incidence data. We also found a difference in age and sex distribution among patients with this diagnosis.

Laparoscopic Management of Primary Omental Torsion in 11-year-old Boy

Primary torsion of the greater omentum is a rare cause of an acute abdomen in children, which often mimic other acute abdominal conditions. Resection of the infarcted segment is the treatment of choice. Here, a case of torsion of the greater omentum, diagnosed with preoperative computed tomography and subsequently managed by laparoscopic surgery, is reported. The patient was discharged three day after surgery without any complication. Omental torsion can be accurately diagnosed and safely treated with a laparoscopy.

Greater Omental Torsion

Primary or idiopathic greater omental torsion is an uncommon cause of an acute surgical abdomen. The etiology of omental torsion is as yet unknown. The preoperative diagnosis is usually hard, and generally made at laparotomy, due to the objective rareness and absence of typical symptoms. Resection of the infarcted segment is the treatment of choice, offering rapid recovery, and reducing the possibility of adhesion formation. A case of primary omental torsion is reported, with a review of the literature.