• CT
• artificial intelligence
• complications
• cross-sectional imaging
• emergency
• small bowel tumors

• Case report
• Computed tomography
• Emergency radiology
• Intussusception
• Peutz-Jeghers Syndrome
• Small bowel disease

• Acute abdomen
• Oncology
• Small intestine

• Abdominal CT diagnosis
• Adult intussusception
• Colo-colic intussusception
• Colonic tumor
• Intestinal obstruction
• Surgical resection

• Gastrointestinal stromal tumors (GISTs)
• duodeno-duodenal intussusception
• intussusception

• adult ileo-ileal intussusception
• computed tomography in adult ileo-ileal intussusception
• inflammatory fibroid polyp
• small bowel obstruction

• ileocolocolic intussusception
• immunohistochemistry staining
• r-codox-m/ivac
• sporadic burkitt lymphoma
• starry-sky appearance

• adult
• colon
• intussusception
• lipoma

• appendiceal intussusception
• appendiceal inversion
• inversion-ligation technique
• partial caecectomy

• adult intussusception
• appendectomy
• case report
• ileocolic intussusception
• ultrasound

• adult intestinal invagination
• adult intussusception
• cecal adenocarcinoma
• ileocolic intussusception
• ileocolic type

• Adult Intussusception
• Burkitt Lymphoma
• Prognostication

• P50 CA097274 NCI NIH HHS

• Abdomen
• Lymphoma
• Multidetector Computed Tomography

• appendicular mass
• complicated appendicitis
• ileocolic intussusception
• intussusception in adults
• radiological approach

• Adulto
• Adults
• Computed tomography
• Intestino delgado
• Intussusception
• Invaginación intestinal
• Small bowel
• Tomografía computarizada por rayos X

• Child
• Humans
• Adult
• Intussusception/diagnostic imaging
• Intussusception/complications
• Retrospective Studies
• Intestine, Small
• Abdominal Pain/diagnostic imaging
• Abdominal Pain/etiology
• Abdomen

• acute abdomen
• compound volvulus
• gangrenous small bowel
• ileo-ileal knotting
• intestinal knotting
• intestinal obstruction

• Acute abdominal pain
• Emergency
• Endometriosis complication
• Imaging

• Adult
• Intussusception
• Malignant
• Multidetector computed tomography
• Predictors

• Humans
• Adult
• Intussusception/diagnostic imaging
• Intussusception/therapy
• Retrospective Studies
• Diagnosis, Differential
• Multidetector Computed Tomography
• Sensitivity and Specificity

• Abdominal pain
• right iliac fossa
• ultrasound

• abdominal pain
• bariatric surgery
• gastric bypass
• intussusception
• marginal ulcers
• small bowel obstruction

• endometrial neoplasms
• intussusception
• computed tomography, x-ray

Intussusception of the cecum due to acute appendicitis is rare condition.

A 17-year-old male patient presented to our hospital with a chief complaint of right lower abdominal pain, which had lasted for two days. Computed tomography (CT) revealed a “target sign” from the cecum to the ascending colon, leading to a diagnosis of cecocolic intussusception. Colonoscopy revealed an erythematous, edematous, and internally distorted cecum in the ascending colon, which was difficult to repair with air insufflation. Laparoscopic surgery was performed to remove the bowel obstruction. Repositioning of the invaginated cecum was difficult due to the presence of a hard and edematous colic wall. Therefore, laparoscopic ileocecal resection was performed to release the obstruction. The pathological diagnosis was appendicitis and abscess within the cecum wall, with no malignant findings.

In our case, intussusception was considered to have caused thickening of the intestinal wall of the cecum due to inflammation of the appendix, and the thickened area became the leading point.

Considering that malignancy is a frequent leading point in adult patients with intussusception, a preoperative endoscopic examination is important for minimizing bowel resection.

•

Most cases of intussusception outside of childhood are caused by tumors, but inflammation of the appendix or cecum can be a cause.

• Appendicitis
• Bowel obstruction
• Intussusception

Intussusception secondary to Meckel's diverticulum is a rare entity in adults and hence, can be a challenging to accurately diagnose preoperatively. This case illustrates the clinical, imaging, operative, and histologic manifestations of a Meckel's diverticulum leading to a long segment ileo-ileal intussusception in an adult female patient presenting with symptoms of small bowel obstruction.

Intussusception in healthy adults is rare and often associated with oncologic diseases. This case report presents a case of an ileo-colic intussusception reaching down to the descending colon in a healthy adult that required ileo-colic resection.

We present a case of a 78-year-old male patient with acute onset unspecific abdominal pain. The medical history was unremarkable. Preoperative radiologic assessments showed an invagination of the small intestine into the colon without any signs of polyps or tumours. An emergency laparotomy with resection of the affected intestine was performed. The pathologist described a 49 cm length of intussuscepted colon and an additional 7 cm intussusception of the terminal ileum. A circular area with multiple polyps extending over 8 cm in the colon could be identified. The microscopic findings showed a low-grade dysplasia within this area. Following surgery, the patient was discharged to rehabilitation after a ten-day hospitalization.

Intussusception in adults is rare and the clinical presentation includes unspecific symptoms making the diagnosis challenging. In 90% of the cases, a pathologic lesion is found (two-thirds are neoplasms). An intussusception involving the colon should be treated surgically without prior reduction due to the high incidence of a neoplasm and the risk for perforation and tumour dissemination.

In the literature, neoplastic disease represents the major cause for intussusception in adults. This report presents a rare case of an ileo-colic intussusception reaching down to the descending colon treated successfully with a subtotal colectomy.

•

Intussusception is a differential diagnosis in adults with abdominal pain.

Pediatric intussusception has been reported to be associated with coronavirus disease 2019 (COVID-19) infection in the literature since the start of the pandemic in the past two years. Although this occurrence is exceptionally rare, rapid diagnosis based on recognition of gastrointestinal manifestations, clinical examination, and ultrasound confirmation can expedite appropriate care and prevent delayed complications. Intussusception is the most common cause of intestinal obstruction and acute abdomen in pediatric patients. Without prompt identification, the disease process can lead to necrosis, bowel perforation, shock, and, subsequently, multiorgan failure. Intussusception has previously been associated with viral upper respiratory infections, which can cause mesenteric lymphadenopathy as a lead point to allow the bowel to telescope upon itself. The mechanism of how COVID-19 can contribute to intussusception without respiratory symptoms remains unknown. Here, we present a case of pediatric intussusception associated with COVID-19.

• Clinical relevance
• Computed tomography
• Differential diagnosis
• Localization
• Magnetic resonance imaging

• Gastrointestinal Tract/diagnostic imaging
• Humans
• Incidental Findings
• Intestines
• Magnetic Resonance Imaging
• Mesentery/diagnostic imaging
• Tomography, X-Ray Computed

Gastric cancer is the most prevalent tumor in Chinese men, and surgery is currently the most important treatment. Billroth II and Roux-en-Y are the anastomosis methods used for reconstruction after gastrectomy. Jejunal intussusception is a rare complication after gastric surgery.

Intussusception after gastric surgery occurs mostly at the gastrojejunostomy site for Billroth II reconstruction, and the Y-anastomosis site for Roux-en-Y reconstruction. Many studies have reported that postoperative intussusception appears at the anastomosis after bariatric surgery, while a few have reported intussusception at the anastomosis and its distal end after radical gastrectomy.

A review was carried out to analyze intussusception after radical gastrectomy with roux-en-y anastomosis during the current situation. And the relevant mechanisms, diagnosis, treatment methods, etc. are described, hoping to provide better guidance for clinicians

• Billroth II
• Intussusception
• Radical gastrectomy
• Roux-en-Y
• diagnosis
• mechanism
• treatment

• Adults
• computed tomography
• intestinal disease
• intussusceptions
• small bowel

• CBD, common bile duct
• CT, Computed tomography
• ERCP, endoscopic retrograde cholangiopancreatography
• GI, Gastrointestinal
• GP, Gangliocytic paraganglioma
• Gangliocytic paraganglioma
• Gastrointestinal bleeding
• Intussusception
• MRCP, Magnetic resonance cholangiopancreatography
• Small bowel
• WHO, World Health Organization

• colocolic intussusception
• colonic lipoma
• lipoma
• surgery

• abdomen
• adenocarcinoma
• bowel
• colorectal
• intussusception
• invagination

• adults
• intussusception
• lupus nephritis
• systemic lupus erythematosus

A 39-year-old man with untreated HIV presented with watery, non-bloody diarrhea and associated 25-lb weight loss. His workup was notable for a CT abdomen/pelvis which showed an entero-enteric intussusception of 3.4 cm without an underlying pathologic mass. The patient's intussusception resolved without intervention, as is typical of telescoping <3.5 cm. HIV is associated with an increased risk of developing intussusception because of an increased incidence of infectious and neoplastic conditions of the bowel.

Peutz-Jeghers syndrome (PJS) is an autosomal dominant inheritance characterized by intestinal hamartomatous polyps and hyperpigmented mucocutaneous macules. Bleeding, bowel obstruction, and intussusception are the most common complications in PJS patients. Individuals are infrequently present for the first time with bowel obstruction secondary to intussusception. Intestinal intussusception presentation is often observed clearly on multidetector computed tomography (MDCT) with characteristic findings, such as “target” and “pseudo-kidney” signs, and sometimes shows the cause of lead-point polyp. A complemental examination is needed to attain more diagnostic symptoms of this disorder, including pigmented spots on the oral cavity and lips, family history with multiple gastrointestinal polyps. Here, we report a case of a 17-year-old male who showed traits of Peutz-Jeghers syndrome. However, the diagnosis was not made until he later developed bowel obstruction caused by an ileo-ileal intussusception manifestation on MDCT and eventually proved in typical hamartoma on postoperative histopathology.

• image findings
• intussusception
• multidetector computed tomography
• peutz-jeghers syndrome
• small bowel obstruction

• Acute Lymphoblastic Leukemia
• Gastrointestinal Complications
• Hematopathology
• Intussusception
• Surgery

• emergency medicine
• gastroenterology
• radiology
• small intestine
• surgery

Appendiceal adenocarcinomas, although rare, usually present as slow-growing masses. Rarely, do they rapidly enlarge into large abdominal masses over a short period of time. Generally, we attribute rapidly growing abdominal masses to sarcomas, desmoid tumors, or gynecological masses. We present a case of a rapidly growing appendiceal adenocarcinoma in an elderly patient.

We report a case of an 83-year-old-male who presented with a one-month history of abdominal pain. A computer tomography (CT) scan identified a lower pelvic mass measuring 7.39 cm × 5.40 cm. A biopsy was done which revealed appendiceal carcinoma. A plan for radiotherapy to reduce the tumor size was made and the patient was discharged. However, the patient returned after three weeks due to worsening abdominal pain and a CT scan identified a significant enhancement in the tumor size. The patient underwent debulking surgery. Pathology of the specimen identified adenocarcinoma of the appendix.

A rapidly growing carcinoma of the appendix is rare as they are known to have a slow growth rate. A swift diagnosis and intervention are required as these rapidly enhancing neoplasms in the abdomen can become unresectable and metastasize. Although there are various methods of treatment for appendiceal carcinomas, the rapid growth rate and lack of response to radiation required debulking surgery.

There exist a myriad of differential diagnoses for a rapidly growing mass in the abdomen. We are presenting the first documented case of a rapidly growing appendiceal adenocarcinoma. Surgeons should be aware of the variety of differentials in such cases.

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Appendiceal carcinomas with such a rapid enhancement in size are quite rare.

• Abdominal mass
• Adenocarcinoma
• Appendiceal carcinoma
• Appendix
• Rapidly enlarging
• Right hemicolectomy

Adult duodenoduodenal intussusception is extremely rare due to the retroperitoneal fixation of the second, third, and fourth parts of the duodenum. A majority of clinically significant intussusception with identifiable etiologies is typically neoplastic with more rare causes including retained food and indwelling enteral tubes, specifically with gastrojejunostomy (GJ) tubes. Herein, we discuss the case of a 23-year-old male who developed duodenoduodenal intussusception upon a PEGJ placement with associated gastroduodenal dilation and telescope phenomenon. To the best of our knowledge, there are no reports of intussusception found to be caused by GJ tubes in the adult population. The reported patient was found to have a 4-cm enteroenteric intussusception without obstruction or ischemia with bowel thickening proximal to the pathology. Although adult intussusception cases are typically managed surgically, we were able to reduce the intussusception via endoscopy due to rapid diagnosis upon presentation and intervention before the bowel wall could be compromised.

• Bowel
• CT
• Gastrointestinal tract
• Incidental findings

• Bowel obstruction
• Hernia
• Intestinal obstruction
• Small bowel
• Small bowel obstruction