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BACKGROUND AND STUDY AIMS: Upper gastrointestinal tract (UGT) leaks are associated with severe morbidity and mortality. Endoluminal vacuum (EVAC) therapy is a promising approach for repairing effectively these defects. Our study describes the results obtained from a series of cases treated with EVAC for the management of esophageal anastomotic (EA) leak following esophagectomy for cancer, gastroenteric (GE) anastomoses leak after bariatric surgery and esophageal perforation (EP). PATIENTS AND METHODS: We retrospectively analyzed ten patients who had an EA and GE anastomoses leaks and EP treated with EVAC. We described the results of the sample in terms of treatment failure, treatment duration, and number of EVAC replacements. RESULTS: Five patients underwent esophagectomy with neoadjuvant radio-chemotherapy, one patient underwent gastrojejunal bypass bariatric surgery and there were four EP. The median size of mucosal defects was 6,9 mm. The median duration of treatment was thirteen days with 3,6 interventions performed, every three to four days. Treatment success rate was 70%. Treatment failure was 30%: two patients required surgery and in one case an endoluminal prosthesis. CONCLUSIONS: EVAC therapy is an appropriate treatment for the management of postoperative fistulas in the UGT. Longer treatments are associated with neoadjuvant chemoradiotherapy and larger fistulas.

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The diagnosis of hypocalcemia-induced tetany following a total thyroidectomy is not common. However, there is a higher risk in patients with a history of gastric bypass surgery due to their malabsorption condition. This case describes postoperative hungry bone syndrome resulting from chronic malabsorption in a patient with a history of bariatric surgery. It is important to consider alternative treatment options if the initial management proves ineffective. Typically, this is a temporary condition, but it's crucial to prioritize prevention in high-risk patients by providing perioperative calcium and vitamin D supplementation.

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Lymphogranuloma Venereum (LGV) is a notifiable disease linked to high-risk sexual practices such as cruising, chemsex, or orgies. The anorectal manifestation is associated with receptive anal sex and presents with characteristic symptoms such as proctitis, tenesmus, suppuration, and in advanced cases, anorectal fistulas or stenosis. The case of a 57-year-old man engaging in high-risk sexual practices is presented, showing symptoms such as discharge, fistulizations, rectal stenosis, and a weight loss of 15 kg. Following diagnostic studies, a neoplastic and inflammatory origin was ruled out, confirming the LGV diagnosis. Although the patient responded positively to a three-week course of doxycycline, the stenosis persisted, ultimately necessitating a terminal colostomy. The patient was scheduled to undergo a protectomy to control the inflammatory and infectious process, a procedure that took place months later without significant incidents. The primary treatment for LGV continues to be doxycycline. In cases of complications, such as fistulas, abscesses, or stenosis, surgical interventions, drainage, or pneumatic dilations may be necessary.

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Anastomotic leak (AL) after with Roux-en-Y gastric bypass (RYGB) has a morbidity rate to 53% and it can be potentially lethal (mortality rate from 0.5 to 10%). In these cases, surgery is usually a challenge, so in recent years minimally invasive endoscopic treatment is gaining ground. Endoluminal vacuum therapy (EVAC) is a promising treatment that is being used in esophagogastric and rectal surgery for the management of AL. We present the case of a patient on his 5th postoperative day of bariatric surgery (RYGB) with an acute abdomen. He was diagnosed of dehiscence of gastrojejunal anastomosis and he needed urgent surgery twice. Subsequently, in control CT, a new anastomotic leak is evidenced. However, given the clinical stability of the patient, it was decided to start EVAC type ESO-Sponge® placed by endoscopy. A total of 4 changes are made every 3-4 days with a total duration of treatment of 15 days. EVAC was removed when the defect presented a 1 mm sized.

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Unlike acute diverticulitis, giant diverticulum larger than 4 cm is a rare entity with few cases described in the literature. We present a case of a 66-year-old male patient diagnosed with colonic diverticulosis. He presented to the emergency department with symptoms of acute abdomen and was diagnosed by CT scan with a 13x14 cm giant diverticulum showing signs of complication. Given the findings, an urgent surgical intervention was decided, and diverticulectomy at the diverticular neck was performed using an endostapler. The etiology of giant diverticula is related to a mechanism of one-way valve at the diverticular neck. Diagnosis poses a challenge as the clinical presentation is nonspecific. The imaging modality of choice is CT scan, which reveals a large cystic image dependent on the sigmoid colon. Definitive treatment is surgical, either by resecting the affected segment including the lesion or by performing a simple diverticulectomy in uncomplicated cases.

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Schwannomas tumours are uncommonly developed in the gastrointestinal tract (2-6%), located in 12% of cases in small and large intestines. An 87-year-old woman was studied due to epigastric pain and dyspepsia. CT scan and colonoscopy showed a neoplastic process in the sigmoid colon. It was performed an oncologic laparoscopic sigmoidectomy. Histological study described a schwannoma and a positive immunohistochemistry to S-100. The diagnostic challenge is that this is a submucosa lesion, therefore, endoscopy biopsy is realized only in the mucosa. This becomes the differential diagnostic very difficult in order to differentiate from another mesenchymal tumor (GIST or leiomyoma). The immunohistochemistry helps in the diagnostic if it is positive to S- 100 and negative to C-KIT, CD-34, actine and desmine (findings of GIST tumors and leiomyoma). In conclusion, schwannoma diagnostic is tough. Those are asymptomatic tumors with nonspecific radiological findings. Diagnostic confirmation is a S-100 positive immunohistochemistry in the histological study.

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Cytomegalovirus (CMV) infection is very common in immunosuppressed patients. It can y puede afectar a todo el tracto gastrointestinal, presentándose como úlceras o pseudotumores. A 43-year-old male with no personal background of interest, was studied due to constitutional syndrome. The diagnosis was neoplasia of the right colon, reported by colonoscopy and CT scan. A right hemicolectomy was performed with oncologic character. The definitive histology was CMV infectious colitis with positive immunohistochemical staining. Treatment with ganciclovir was started and the patient was diagnosed with HIV infection. The unusual finding of CMV infection as a pseudotumor can simulate, clinically and radiologically, a colonic neoplasm. It has been described in the literature in patients immunocompromised by HIV; however, the absence of risk factors means that it can be confused with a primary neoformative process.

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