A therapeutic barium enema is a practical option to control bleeding from the appendix.

A 71-year-old male visited our hospital because of melena. He was suffering from diabetes mellitus and the sequelae of a cerebral infarction. He has been receiving oral diabetic drugs and an anti-coagulation drug, ticlopidine hydrochloride for 10 years. His blood pressure was 150/83 mmHg and the pulse rate was 105/minute. A blood examination revealed a high level of blood sugar at 162 mg/dL, and hemoglobin A1c of 6.6%, but neither a decrease in red blood cells nor hemoglobin. A computed tomography scan in the abdomen detected a high density fluid of ascites, but no inflammatory changes in any organs, including the intestinal tract. By an emergency colonoscopy, the fresh blood in the entire colon, but not in the ileum, and the blood and coagula in the orifice of the appendix were observed (Figure  1 A). After washing the orifice with water, a hemorrhage was detected in the appendix (Figure  1 B), and the lesion responsible for bleeding was regarded to exist in the appendix. After obtaining the patient’s informed consent, 200 ml of 50 W/V% barium was sprayed into the orifice of the appendix using a spraying tube (Figure  1 C), because a therapeutic barium enema has been shown to be a useful procedure to control bleeding from a diverticulum [ 23 , 24 ]. The bleeding could be immediately stopped, and a radiological examination revealed the accumulation of barium at the cecum and the orifice of the appendix (Figure  2 A). The barium accumulation disappeared by the next day (Figure  2 B) and no obvious anal bleeding was observed in the patient. Two weeks after stopping the bleeding from the appendix, an appendectomy was performed to prevent further refractory hemorrhage from the appendix. A gross specimen showed ulceration, but no tumorous lesions, at the tip of the appendix (Figure  3 A). A severe infiltration of neutrophils and lymphocytes within a shallow ulcer was histologically observed (Figure  3 B). The administration of the anti-coagulant ticlopidine hydrochloride, was restarted two weeks after the operation. The patient has had no complaints of any abdominal symptoms, including anal bleeding, for 10 months. The findings of emergency endoscopy. Blood and coagula were observed in the cecum (A) . After washing with water, a hemorrhage from the appendix was detected (B) . Two hundred ml of 50 W/V% barium was sprayed into the orifice of the appendix through a spraying tube (C) . Radiological examinations of the abdomen. A radiological examination showed the accumulation of the barium at the cecum and orifice of the appendix (A) . By the next day, the accumulation had almost completely disappeared (B) . Histological features of the surgical specimen. A gross surgical specimen showed an ulcer in the tip of the appendix with no tumorous lesion (A) . The histological sections revealed a severe infiltration of neutrophils and lymphocytes within a shallow ulcer (Hematoxilin eosin staining, ×40) (B) .

Tha authors declare that they have no competing interests.

The work presented here was carried out in collaboration between all authors. All authors have contributed to, seen and approved the manuscript.

Acute lower gastrointestinal hemorrhage originating from the appendix is rare and often intractable [ 1 - 22 ], because it is very difficult to approach the bleeding point in the appendix by endoscopy. Therefore, in most cases with bleeding from the appendix, an emergency operation was necessary [ 1 - 13 , 15 - 22 ]. We herein report the first case of the bleeding associated with the appendix ulcer which was successively controlled by the administration of a therapeutic barium enema into the appendix.

This report presented the first case of bleeding from an appendix ulcer that was successfully controlled with therapeutic barium enema. To date, 23 cases of bleeding from the appendix have been reported [ 1 - 22 ] (Table  1 ). The age of the patients with bleeding from the appendix ranged from 9 to 76 years of age. Sixteen patients were male, while the others were female. The causes of the bleeding included diverticulitis [ 1 ], Crohn’s disease [ 2 , 4 , 16 ], a mucinous cyst [ 6 ], aorta-appendix fistula [ 15 ], ectopic uterus mucosa [ 10 ], angiodysplasia [ 11 , 14 ], intussusceptions [ 3 , 8 , 9 , 13 ], gastrointestinal stromal tumor [ 20 ] and intestinal tuberculosis [ 21 ]. Anti-coagulation drugs were administered in 4 cases [ 5 , 17 , 20 ]. In the present case, the administration of the anti-coagulation drug, ticlopidine hydrochloride, was thought to aggravate the bleeding from the appendix, while the cause of the ulceration itself of the appendix remains unclear. The therapeutic barium enema is thought to have stopped the acute bleeding from the appendix, and the suspension of the administration of the anti-coagulant helped to prevent re-bleeding. In many of the reported cases, the appendix bleeding has been diagnosed via colonoscopy. The reported cases and our case of bleeding from appendix Up to now, an emergency operation, including partial cecectomy and hemicolectomy, is generally conducted to control the bleeding in most cases, but no non-operative therapeutic strategy for bleeding from the appendix has yet been established. Only one case of the embolization of the responsible artery has so far been reported [ 14 ]. As the therapeutic use of a barium enema has recently been shown to be a useful procedure to treat diverticular bleeding [ 23 , 24 ], we thought that the use of a therapeutic barium enema could also be a practical and less invasive option for controlling such intractable appendix bleeding. In fact, the present case is the first reported case in which a therapeutic barium enema successfully controlled such bleeding. The mechanism underlying this effect was speculated to be protection of the intestinal epithelia, compression of the blood vessels, coagulating action and the production of a thrombus by the barium itself. In the current case, such functions of the barium enema appeared to be effective for controlling the bleeding from the appendix. From this perspective, the therapeutic barium enema is thought to be useful for the treatment of appendiceal bleeding caused by erosions or ulcers in the appendix, as well as that caused by other disorders, such as diverticulitis and angiodysplasia. We were apprehensive that the therapeutic barium enema might cause the obstruction of the appendix, leading to severe appendicitis. However, the accumulation of barium was almost completely eliminated by the next day, and an appendectomy was successfully performed. An appendectomy is a routine laparoscopic procedure that poses much less risk and less invasive for the patient than an emergency operation, such as cecectomy and hemicolectomy, and arterial embolization. Therefore, the use of a therapeutic barium enema is thought to be a practical and safe procedure to control bleeding from the appendix and to avoid an emergency operation. The patient has given their consent for the case report to be published. Written informed consent was obtained from the patient for publication of this case report and any accompanying images. A copy of the written consent is available for review by the Editor-in-Chief of this journal.

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