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We present the case of a 40-year-old female who presented with abdominal pain, hematochezia, and melena for the past week and was diagnosed with a pseudoaneurysm emanating from the mid-splenic artery. The patient was managed with endovascular cyanoacrylate glue embolization, resulting in the complete resolution of an impending catastrophic hemorrhagic shock.

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Background: Congenital extrahepatic portosystemic shunt (CEPS), also termed Abernethy malformation (AF) is a rare anomaly of the splanchnic venous system. Several approaches, including shunt closures through surgical or radiological interventions and liver transplantations, have been proposed, but clear comparisons among different treatment strategies are still unavailable. Purpose: We report a case in which an unusual portosystemic shunt was present between the dilated inferior mesenteric vein (IMV) to the right ovarian vein. A mini literature review of AF patients presented with gastrointestinal (GI) tract bleeding. Research design: Case report and literature review. Data Collection: An electronic search of PubMed was performed from inception to December 2023. Results: 34 AF patients presented with GI tract bleeding were identified published in the literature. The proportion of type II AF patients presenting with GI bleeding is greater (79%). Conclusions: We regard that both surgical ligation and endovascular closure of the shunt are effective and safe treatments for these patients, but coils embolization alone may not be sufficient to completely close the shunt when the shunt flow is high.

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Colonic angiomyolipomas (CA) are very rare benign tumors arising from perivascular epithelioid cells. CA are most often found either during screening colonoscopies or as an incidental finding during abdominal imaging. However, some rare cases of CA are found to present with abdominal pain and hematochezia. In this article, we report a case of a 62-year-old man who presented with intermittent hematochezia and constipation who was found to have an angiomyolipoma in the sigmoid colon. The lesion was successfully removed endoscopically with no recurrence of bleeding and no complications within the first 30 days after the procedure.

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The bloody stools of newborns may be a clue for several clinical entities of varying severity, ranging from idiopathic neonatal transient colitis to food-protein-induced allergic proctocolitis (FPIAP) or necrotizing enterocolitis (NEC). Distinguishing among them at an early stage is challenging but crucial, as the treatments and prognoses are different. We conducted a monocentric retrospective study including all pre-term infants with bloody stools admitted to the Neonatal Intensive Care Unit (NICU) of the Vittore Buzzi Children's Hospital (Milan) from December 2022 to May 2024. Patients diagnosed with NEC exhibited significantly lower eosinophil counts and higher procalcitonin levels than both patients with FPIAP and patients with idiopathic neonatal transient colitis, as well as a statistically significant increase in pathological features from abdomen ultrasounds and abdominal X-rays. In contrast, no lab markers or imaging techniques have been demonstrated to be useful in distinguishing between idiopathic neonatal transient colitis and FPIAP. Thus, after excluding a diagnosis of NEC, the only way to confirm FPIAP is through the oral food challenge, which can be performed in premature newborns presenting with bloody stools who are otherwise healthy and under medical supervision, in order to identify infants who may benefit from a cow's-milk-free diet.

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BACKGROUND: Plasma cell myeloma (PCM) is characterized by hypercalcemia, renal impairment, anemia, and bone destruction. While pleural effusion, ascites, abdominal pain, and bloody stool are common manifestations of lung disease or gastrointestinal disorders, they are rarely observed in patients with PCM. CASE SUMMARY: A 66-year-old woman presented with complaints of recurrent chest tightness, wheezing, and abdominal bloating accompanied by bloody stools. Computed tomography revealed pleural effusion and ascites. Pleural effusion tests showed inflammation, but the T-cell spot test and carcinoembryonic antigen were negative. Endoscopy showed colonic mucosal edema with ulcer formation and local intestinal lumen stenosis. Echocardiography revealed enlarged atria and reduced left ventricular systolic function. The diagnosis remained unclear. Further testing revealed elevated blood light chain lambda and urine immunoglobulin levels. Blood immunofixation electrophoresis was positive for immunoglobulin G lambda type. Smear cytology of the bone marrow showed a high proportion of plasma cells, accounting for about 4.5%. Histopathological examination of the bone marrow suggested PCM. Flow cytometry showed abnormal plasma cells with strong expression of CD38, CD138, cLambda, CD28, CD200, and CD117. Fluorescence in situ hybridization gene testing of the bone marrow suggested 1q21 gene amplification, but cytogenetic testing showed no clonal abnormalities. Colonic mucosa and bone marrow biopsy tissues were negative for Highman Congo red staining. The patient was finally diagnosed with PCM. CONCLUSION: A diagnosis of PCM should be considered in older patients with pleural effusion, ascites, and multi-organ injury.

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We report a case of a 13-year-old male who presented to the Pediatric Gastroenterology clinic with complaints of abdominal pain and frequent stooling, worsened by hematochezia. Despite undergoing endoscopic evaluation twice within a 1-year period, the diagnosis of an Inflammatory Cloacogenic Polyp (ICP) was only revealed during the second evaluation, in which rectal retroflexion was performed. This case highlights the importance of maintaining the ICP at the anorectal transitional zone as part of the differential diagnosis when evaluating patients with symptoms of distal colitis.

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Cystic artery stump pseudoaneurysm (CASP) is a potentially life-threatening condition that can be related to multiple etiologies, especially the iatrogenic factor owing to the increased number of hepatobiliary procedures. Most patients present with haemobilia. Here we report a successfully managed case of CASP that initially complained of right upper abdominal pain. A 38-year-old patient developed bile duct injury after laparoscopic cholecystectomy (LC) which was identified by magnetic resonance cholangiopancreatography (MRCP). Later, she developed haemobilia due to CASP which was then treated by trans-arterial embolization (TAE). CASP is a rare complication of post-LC, yet potentially life-threatening, with possible delayed complications occurring months to years after the surgery. Clinicians and radiologists should be aware of this important entity and its variable manifestations to facilitate early treatment.

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Upper gastrointestinal bleeding (UGIB) is a significant concern in children, contributing to 6-20% of cases in pediatric intensive care units. This study evaluates the roles of Helicobacter pylori (H. pylori) infection and non-steroidal anti-inflammatory drug (NSAID) usage in the etiology of UGIB in children, with a particular focus on trends observed during the COVID-19 pandemic. We conducted a retrospective analysis of 103 pediatric patients who underwent esophagogastroduodenoscopy (EGD) for UGIB between January 2015 and December 2023. Of these, 88 patients were included in the final analysis, where the source of bleeding was successfully identified. Hematemesis was the most common presentation, and the source of bleeding was identified in 85.43% of cases. The prevalence of H. pylori infection remained stable across the pre-pandemic (39.7%) and post-pandemic (36.7%) periods. However, NSAID usage increased nearly threefold during the pandemic, with 36.7% of post-pandemic UGIB cases associated with NSAID use, compared to 12.1% pre-pandemic. These findings underscore the significant roles of H. pylori and NSAID use in pediatric UGIB, with a notable increase in NSAID-related cases during the pandemic.

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The main metastatic sites of renal cancer are the lungs, bone, liver, and brain. Dissemination of clear cell renal carcinoma to the rectum is very rare, with only a few sporadic cases published in the literature. The clinical presentation is usually dominated by lower gastrointestinal haemorrhage. We report the 5th case in the literature of a rectal metastasis of clear cell renal carcinoma, revealed by a lower gastrointestinal haemorrhage occurring 8 years after the initial nephrectomy.

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We present a case of Cronkhite-Canada syndrome in a patient with decompensated cirrhosis who had successful induction of remission with nutritional supplementation alone. We propose that early institution of high-protein, high-energy enteral supplementation should be offered to all patients, especially those with compelling contraindications to immunosuppression.

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This case report presents a rare complication of hepatic cystic echinococcosis in a 12-year-old Latino male, residing in a nonendemic region, who developed long-term sequelae of portal vein thrombosis accompanied by the emergence of a hyper-vascular sigmoid colon mass. Portal vein involvement in hepatic cystic echinococcosis is exceedingly uncommon, with limited documented cases. The presentation of the patient included intermittent hematochezia, abdominal pain, and fatigue. Imaging revealed liver cysts and chronic portal vein thrombosis with cavernous transformation, resulting in portal hypertension. Notably, the patient also exhibited mesenteric venous thrombosis, further complicating the clinical picture. The diagnosis was confirmed through echinococcus serology testing. Treatment involved a six month course of Albendazole, puncture-aspiration-injection-reaspiration procedure, splenectomy, and splenorenal shunt to alleviate portal hypertension. This case underscores the significance of considering portal hypertension secondary to hepatic cystic echinococcosis, even in nonendemic regions, particularly in pediatric patients with unique clinical presentations.

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Gastrointestinal angiosarcoma is an extremely rare malignant tumor of the digestive tract, characterized by a very poor prognosis, with few patients surviving more than 1 year after diagnosis. This case report describes a 71-year-old female patient with a 3-year history of intermittent abdominal pain and significant exacerbation of abdominal pain and bloating 2 weeks prior to treatment. After surgical treatment, the pathological and immunohistochemical diagnosis was primary epithelioid angiosarcoma of the jejunal mesentery. The patient refused postoperative adjuvant chemotherapy and died 4 months after diagnosis due to widespread systemic metastasis. In addition, this article reviews 38 previously reported cases of primary gastrointestinal angiosarcoma, aiming to further understand angiosarcoma and thus guide clinical practitioners in providing more comprehensive treatment approaches.

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Hematochezia due to recurrent bleeding from rectal Dieulafoy can be challenging for endotherapy. We report the first case of successful endoscopic ultrasound-guided coil embolization of a feeding arteriole to the peripheral Dieulafoy vessels in the region of a colorectal anastomosis. The patient presented with recurrent lower gastrointestinal hemorrhage despite multiple previous conventional endoscopic treatment modalities.

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Introduction: Mesenteric fibromatosis (intra-abdominal desmoid tumor) is rare, with only a few cases reported in the literature. Clinical symptoms range from asymptomatic, nausea, early satiety, abdominal pain, and gastrointestinal bleeding. Although histologically benign, such a tumor may become locally invasive, and aggressive forms contribute to significant morbidity and mortality. Case Presentation: We report the case of a 52-year-old West African male with a 1-year history of intermittent hematochezia and intermittent bloating. Colonoscopy revealed a 4-mm rectal polyp and internal hemorrhoids. Esophagogastroduodenoscopy revealed a severe duodenal stricture 4-5 cm distal to the ampulla. Further work-up with contrast-enhanced computed tomography of the abdomen and pelvis revealed a 5.0 × 3.7 × 4.3-cm mass within the mesentery, encasing the distal portion of the duodenum. Exploratory laparotomy was performed, and the mass was excised from the jejunum. Histopathology findings and immunohistochemical analysis revealed the diagnosis to be mesenteric fibromatosis (desmoid tumor), positive for nuclear ß-catenin and SMA, and negative expression of STAT6, desmin, caldesmon, pan-cytokeratin, or c-KIT. The Ki67 index is <1%. Conclusion: This case report highlights the diagnostic challenges of mesenteric fibromatosis due to its nonspecific clinical presentation. Recognizing uncommon presentations of mesenteric fibromatosis and risk factors aids in early diagnosis, management, and treatment. Importantly, this also aids in the prevention of complications such as intestinal obstruction, bowel ischemia, and fistula formation.

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Angiolipomas are rare, benign tumors characterized by a mixture of adipose tissue and blood vessels, distinguishing them from lipomas. This case involves a 52-year-old woman with no significant medical history who presented with generalized weakness, fatigue, and intermittent, painless rectal bleeding over six months, initially dismissed as hemorrhoidal. Despite exhibiting mild pallor and trace rectal bleeding upon examination, significant iron-deficiency anemia was diagnosed through laboratory tests. Incorporating colonoscopy and computed tomography, the diagnostic process identified a 2 cm submucosal lesion in the ascending colon, characterized as a well-defined, fat-density mass. Histopathological analysis following surgical resection confirmed the diagnosis of a colonic angiolipoma. The patient's recovery, marked by the resolution of symptoms and normalization of hemoglobin levels, underscores the effectiveness of surgical treatment. This case highlights the diagnostic challenges posed by colonic angiolipomas due to their nonspecific symptoms. It emphasizes the importance of considering such rare entities in the differential diagnosis of gastrointestinal symptoms. This approach facilitates prompt and appropriate treatment, enriching the limited literature and advocating for clinical vigilance and interdisciplinary diagnostic strategies.

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BACKGROUND: This case report presents the rare occurrence of hematochezia due to an internal iliac artery aneurysm leading to an arterioenteric fistula, expanding the differential diagnosis for gastrointestinal bleeding. It emphasizes the importance of considering vascular origins in cases of atypical hematochezia, particularly in the absence of common gastrointestinal causes, and highlights the role of imaging and multidisciplinary management in diagnosing and treating such unusual presentations. CASE SUMMARY: A 75-year-old man with a history of hypertension presented with 12 d of hematochezia, experiencing bloody stools 7-8 times per day. Initial computed tomography (CT) scans revealed an aneurysmal rupture near the right internal iliac artery with suspected hematoma development. Hemoglobin levels progressively decreased to 7 g/dL. Emergency arterial angiography and iliac artery-covered stent placement were performed, followed by balloon angioplasty. Despite initial stabilization, minor rectal bleeding and abdominal pain persisted, leading to further diagnostic colonoscopy. This identified a neoplasm and potential perforation at the proximal rectum. An exploratory laparotomy confirmed the presence of a hematoma and an aneurysm invading the rectal wall, necessitating partial rectal resection, intestinal anastomosis, and ileostomy. Postoperative recovery was successful, with no further bleeding incidents and normal follow-up CT and colonoscopy results after six months. CONCLUSION: In cases of unusual gastrointestinal bleeding, it is necessary to consider vascular causes for effective diagnosis and intervention.

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Necrotizing enterocolitis (NEC) increases morbidity and mortality for infants with single ventricle heart disease (SVHD). While hematochezia often proceeds NEC not all hematochezia progresses to NEC. We aimed to examine the incidence, risk-factors, and outcomes associated with hematochezia and NEC for infants with SVHD. A single-center cohort study including SVHD patients requiring Stage I palliation from 12/2010 to 12/2015 was performed. Demographic, clinical, and outcome measures during the interstage period were abstracted from medical records. We defined hematochezia as blood in the stool without alternative etiology and NEC as systemic or intestinal signs concurrent with hematochezia and/or the presence of radiographic pneumatosis. Clinical characteristics and outcome measures were compared between patients with/without hematochezia and with/without NEC. Of 135 patients, 59(44%) had hematochezia and 20(15%) developed NEC. Demographic and operative factors were similar between patients with and without hematochezia. Patients with NEC were more often premature (15% vs 0%, p = 0.04), have lower birth weight (3.0 ± 0.6 vs 3.3 ± 0.5 kg, p = 0.03), longer cardiopulmonary bypass time (median 131 vs. 90 min, p = 0.02) and more often underwent unplanned cardiac catheterization (20% vs 3%, p = 0.04). Patients with hematochezia had more line days (p < 0.0001) and longer post-Stage-I length of stay (p < 0.0001) than those without hematochezia, and those with NEC had more line days than those without NEC (p = 0.02). Hematochezia is frequent following Stage-I palliation, however only one third of these patients develop NEC. Non-NEC Hematochezia is associated with a similar increase in line and hospital days. Further research is needed to identify methods to avoid over treatment.

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Tissue necrosis and ischemia are hallmarks of acute necrotizing pancreatitis, which frequently results in fatal infections. In this case, we describe a man in his 40s who had diffuse pain in the abdomen, intractable vomiting, diarrhoea, and intermittent fever. His abdominal computed tomography revealed acute pancreatitis with peripancreatic fluid collection, gastric perforation, and fistula formation between the greater curvature of the stomach and transverse colon. His upper gastrointestinal (GI) endoscopy confirmed a gastrocolic fistula.

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Infants with congenital heart disease (CHD) are at risk for developing both benign hematochezia and necrotizing enterocolitis (NEC). Despite these risks there are very few studies that investigate modifiable risk factors such as feeding practices. It remains unclear what feeding practices should be avoided due to higher incidence of CHD-NEC. We aim to assess the feeding practices across three high volume tertiary centers to establish a relationship between various feeding practices and development of NEC. A multicenter retrospective review of feeding practices at the time of documented hematochezia event that occurred between 1/2019 and 1/2021 in infants with CHD who were less than 6 months of age. NEC was defined as Bells Stage 2 or greater. Age, weight, ventricular morphology, primary diagnoses, feeding route, feed change, and formula type were evaluated. 176 hematochezia events occurred in 121 patients, 72% of these events were considered benign hematochezia with the remaining 28% being true NEC. Single ventricle (SV) physiology (p < 0.05), younger age, < 45 days of life, (p < 0.001), and feeding route were statistically associated with true NEC (p < 0.01). Formula type and recent change in feed administration were not associated with NEC. The caloric density of feeds at the time of hematochezia was nearing significance. The majority of hematochezia events are benign in nature, however, there should be heightened awareness in patients who are SV, younger in age, and those who are post-pylorically fed. There may be some risk in using higher caloric density feeds (> 24 kcal/oz), however, additional research is needed to fully establish this relationship.