Explore the vast range of titles available.

Primary enterolithiasis is characterized by the formation of stones within the small bowel. The prevalence is estimated to be ~0.3% to 10% in selected populations. Due to its rarity, diagnosis is often delayed. We present the case of a 77 year old male who presented with small bowel obstruction, which was initially thought to be due to intussusception seen on abdominal computed tomography scan. He underwent two diagnostic laparoscopies within 1 month because his small bowel obstruction did not resolve with the initial surgery. The primary enterolith was not discovered until the second surgery where a 5 cm primary enterolith was seen in the small bowel causing early mucosal necrosis. The stone was removed, and the enterotomy was closed. After the enterolith was removed, the patient’s upper gastrointestinal symptoms completely resolved.

Primary enterolithiasis must be considered in subacute bowel obstruction, even in patients lacking classic risk factors. Persistent, unexplained abdominal symptoms necessitate repeat imaging and heightened clinical suspicion, as timely surgical resection often provides both the diagnosis and definitive treatment.

Abstract Small bowel obstruction (SBO) secondary to enterolithiasis in the setting of small bowel diverticulosis is rare, and diagnosis can be challenging. Enteroliths may cause complications including diverticulitis, perforation, and obstruction, typically requiring surgical removal. An 83-year-old woman presented with abdominal pain, vomiting, and constipation. CT imaging demonstrated an intraluminal lesion at the duodenojejunal junction adjacent to an inflamed duodenal diverticulum, consistent with diverticulitis and partial SBO. Initial conservative management included nasogastric decompression, intravenous antibiotics, and parenteral nutrition. Serial imaging showed migration of the intraluminal mass to the proximal jejunum, but persistent obstruction prompted laparotomy and enterotomy, revealing an inspissated food bezoar. Enterolith-induced SBO and diverticulitis is an uncommon but important differential in elderly patients presenting with obstructive symptoms. While conservative management may be attempted in select patients, progression to surgery is frequently required. Early recognition and tailored management can improve outcome.

Enterolithiasis is an uncommon entity in humans but frequently seen in equine mammals. A primary enterolith is a mineral concretion formed within the gastrointestinal tract due to the alteration in the anatomical integrity due to variety of conditions resulting in intestinal stasis. We report a patient with small intestinal obstruction due to a primary enterolith. A 65-year-old woman presented to the emergency department with central colicky abdominal pain, absolute constipation followed by vomiting. An enterolith located in distal ileum causing small intestinal obstruction was established with the aid of abdominal X-ray radiograph and computed tomography. Exploratory laparotomy was performed to extract the enterolith and to resect a strictured proximal jejunal segment which was suspected to be the original site of enterolith formation. Chemical analysis of the enterolith supports the speculation of a proximally formed primary enterolith eventually migrating to the site of impaction in the terminal ileum.

Enterolithiasis is a well-documented cause of colic in horses, especially in some geographic areas such as California and Florida. This retrospective case-control study aims at comparing the prevalence of gastric ulcers in horses affected by enterolithiasis to that in horses affected by other types of large intestinal obstruction. Two hundred and ninety-six horses were included in the study sample. Horses that had surgery for the removal of one or more enteroliths were included in the study as cases. Patients that had surgery for large intestinal simple obstructions other than enterolithiasis (large colon displacement, non-strangulating large colon torsion, and large and small colon impactions) were selected to match case horses for age, sex, and breed and included as controls. A total of 101/148 horses with enteroliths (68%) had gastric ulcers diagnosed during hospitalization, compared with 46/148 of matched controls (31%). There was a significant association between enterolithiasis and gastric ulceration (odds ratio 4.76, p < 0.0001), and a greater prevalence in Thoroughbreds as compared with other breeds (odds ratio 22.6, p < 0.0001). We concluded that enterolithiasis is significantly associated with gastric ulceration (p < 0.0001). The association is stronger in Thoroughbreds.

The carcass of a critically endangered, juvenile female grey nurse shark (Carcharias taurus, Rafinesque 1810) was recovered from a south‐eastern Australian beach and subjected to necropsy. The 1.98‐m‐long shark exhibited advanced cachexia with its total weight (19.0 kg) and liver weight (0.37 kg) reduced by 60% and 89%, respectively, compared with a healthy individual of the same length. Marked tissue decomposition was evident preventing histopathology and identification of a definitive cause of death. At necropsy, the abdominal organs were abnormally displaced and showed marked reductions in size compared with a healthy individual of the same size. Importantly, a hook‐shaped enterolith (HSE), with a rough surface and cream in colour, was found within the spiral valve of the intestine and is to the authors’ knowledge, the first description of such in any marine animal. X‐ray diffractometry showed that the HSE comprised the minerals monohydrocalcite (Ca[CO₃].H₂O; ~70 wt%) and struvite (Mg [NH4] [PO4]. [H2O]6; ~30 wt%). A CT scan showed concentric lamellate concretions around a 7/o offset J‐hook that formed the nidus of the HSE. Nylon fishing line attached to the hook exited the HSE and was evident in the abdominal cavity through a perforation in the intestinal wall where the posterior intestinal artery merges. The most parsimonious reconstruction of events leading to enterolithiasis and secondary cachexia in this shark was the consumption of a hooked fish and subsequent hook migration causing perforations of the cardiac stomach wall followed by the thin, muscular wall of the apposed, sub‐adjacent intestine. Hook‐shaped enterolith found in the intestine of a stranded, immature female grey nurse shark, Carcharias taurus, that exhibited advanced cachexia. The enterolith was composed of the minerals monohydrocalcite and struvite and a 7/o offset J‐hook formed the nidus. Nylon line attached to the hook (enterolith) was also evident in the abdominal cavity via a perforation of the intestine.

Enterolithiasis or formation of gastrointestinal concretions is an uncommon medical condition that develops in the setting of intestinal stasis due to various pathologies. Its prevalence ranges upto 10% and can present in different clinical pictures to challenge a clinician. Enterolithiasis or formation of gastrointestinal concretions is an uncommon medical condition that develops in the setting of intestinal stasis due to various pathologies. Its prevalence ranges upto 10% and can present in different clinical pictures to challenge a clinician.

Enterolithiasis associated with blind pouch syndrome secondary to functional end-to-end anastomosis is rare, and its endoscopic and radiological features remain poorly described. A 72-year-old woman was admitted to our hospital for abdominal pain and difficulty defecating. Colonoscopy (CS) with Gastrografin revealed a 10 × 8 cm calculus, an anastomotic ulcer, a blind pouch, and an end-to-end anastomosis in the transverse colon. The calculus was successfully crushed and removed with snares and alligator forceps through CS during the ensuing 4-day period. To our knowledge, this is the first report describing the endoscopic and radiological features of blind pouch syndrome-associated enterolithiasis successfully treated with CS.

Background True primary enterolithiasis is an uncommon condition, and nontraumatic perforation of the small intestine (NTPSI) is also an unusual entity. Therefore, NTPSI due to true primary enteroliths is an exceptionally rare complication. Moreover, enterolithiasis and radiation enteritis are also unique combinations. Herein, we present an exceedingly rare case of NTPSI induced by multiple true primary enteroliths associated with radiation enteritis. Case presentation A 92-year-old woman with acute abdominal pain was transferred to our hospital because a computed tomography (CT) scan performed by her family doctor revealed free air and fluid collection within her abdomen. Our initial diagnosis was upper gastrointestinal perforation, and we selected nonoperative management (NOM) with adnominal drainage. Although her general condition was stable, jejunal juice was drained continuously. Given that the CT performed 10 days after onset demonstrated perforation of the small intestine and adjacent concretion, we performed an emergency partial resection of the small intestine and jejunostomy. The resected bowel was 1 m in length and had many strictures that contained multiple enteroliths in their proximal lumens. The patient’s postoperative course was uneventful. The enteroliths were composed of deoxycholic acid (DCA). She was diagnosed with peritonitis due to NTPSI derived from multiple true primary enteroliths associated with radiation enteritis, as she had previously undergone hysterectomy and subsequent internal radiation therapy. Conclusions Clinicians should consider the rare entity of true primary enteroliths associated with radiation enteritis in NTPSI cases with unknown etiologies.