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Background: Esophageal carcinosarcoma is an uncommon histologic variant of esophageal malignancy, occurring in approximately 0.5% to 2.8% of patients. Esophageal carcinosarcoma usually involves the middle and lower esophagus and consists of both epithelial and mesenchymal components. Case Report: A 54-year-old male presented with painless progressive dysphagia associated with loss of weight for 2 months. Esophagogastroduodenoscopy suggested an ulceroproliferative polypoidal growth in the lower thoracic esophagus. Biopsies from the growth showed leiomyosarcoma with tumor cells immunopositive for vimentin, h-Caldesmon, and smooth muscle actin and negative for pan-cytokeratin. Imaging suggested a heterogeneously enhancing polypoidal growth arising in the lower third of the esophagus. Thoracoscopic-assisted McKeown esophagectomy with gastric pull-up and standard 2-field lymphadenectomy was performed. A minor epithelial component was identified on final pathologic examination in addition to the leiomyosarcoma found on the preoperative biopsy. This epithelial component was invasive squamous cell carcinoma and was positive for pan-cytokeratin and p40, both of which were negative in the sarcomatous component. The patient received 4 cycles of adjuvant chemotherapy (carboplatin and paclitaxel). However, he developed a recurrence in the left cervical lymph node 4 months after adjuvant treatment and died 2 months after the diagnosis of recurrence. Conclusion: Carcinosarcoma can be easily missed in the presence of predominantly sarcomatous components even on immunohistochemical analysis. These tumors may be associated with poor prognosis and may have early recurrence despite surgery and adjuvant treatment., (©2023 by the author(s); Creative Commons Attribution License (CC BY).)

Post-esophagectomy hiatal hernia is a rare complication having varied presentation from asymptomatic cases detected incidentally on follow-up imaging to acute surgical emergency for strangulation or gangrene. Patients presenting as a surgical emergency have a prolonged post-operative course with significant morbidity. We present three cases of post-esophagectomy hiatal hernia. Two of the three cases were operated for esophageal squamous cell carcinoma (SCC) and one patient was operated for esophageal leiomyomatosis. Two of the three cases (SCC and esophageal leiomyomatosis) underwent minimally invasive Mckeown's esophagectomy and one case underwent robotic transthoracic Ivor-Lewis esophagectomy. All cases underwent contrast enhanced CT (CECT) and were biopsy proven prior to their index surgery. Both cases of SCC had prior neoadjuvant chemoradiation followed by surgery while esophageal leiomyomatosis underwent upfront surgery. All three cases have improved symptomatically and are doing well on follow up (case 1 - 12 months, cases 2 and 3 - 3 months).  All three of our cases have different clinical presentation in terms of symptoms, severity, and time duration from index surgery. Two of the three cases underwent emergency surgery and one case which was asymptomatic detected incidentally on surveillance imaging and was managed conservatively. Post-esophagectomy hiatal hernia is a rare entity with varying presentation. The management options in such cases vary depending on the severity of symptoms and time after index surgery. In cases presenting as surgical emergency, successful management depends on prompt detection, early surgery, proper post-operative care, and rehabilitation., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2023, Jain et al.)

With the advent of robotic surgery as an effective means of minimally invasive surgery in the last decade, more and more surgeries are being performed robotically in today's world. Robotic surgery has several advantages over conventional laparoscopic surgery, such as three-dimensional vision with depth perception, magnified view, tremor filtration, and, more importantly, degrees of freedom of the articulating instruments. While the literature is abundant on robotic cholecystectomy and highly complex hepatobiliary surgeries, there is hardly any literature on robotic small bowel resection with intracorporeal anastomosis. We present a case of a 50-year-old male patient with a symptomatic proximal jejunal ischemic stricture who underwent robotic-assisted resection and robot-sewn intracorporeal anastomosis in two layers. He did well in the postoperative period and was discharged on postoperative day 4 with uneventful recovery. We hereby discuss the advantages and disadvantages of robotic surgery in such a scenario with a review of the literature., Competing Interests: Conflict of interest All authors have no conflicts of interest to declare., (Copyright © The Korean Society of Endo-Laparoscopic & Robotic Surgery.)

Epiphrenic diverticulum is a rare abnormality of the distal oesophagus. Both thoracic and abdominal approaches are suitable for this diverticulum. A 46-year-old male presented with complaints of regurgitation and chest pain for 2 years. Contrast-enhanced computed tomography of the neck, thorax, abdomen and oesophageal endoscopy revealed 12 cm × 10 cm size large intrathoracic oesophageal diverticulum. He underwent an elective laparoscopic transabdominal oesophageal diverticulectomy. Gastrograffin study on the first post-operative day did not reveal any leak. In this case report, we are sharing our experience in the management of large epiphrenic oesophageal diverticulum through a laparoscopic approach. The benefits of the laparoscopic approach include decreased morbidity because we can avoid large thoracotomy or laparotomy incision., Competing Interests: None

Background: Most malignant tumors arising from the biliary tract are adenocarcinomas. Adenosquamous carcinoma is an uncommon variant of extrahepatic bile duct cancer that is associated with more aggressive behavior than adenocarcinoma. Case Report: A 58-year-old male presented with complaints of obstructive jaundice and dull aching pain in the abdomen. At his initial evaluation in another hospital, ultrasound of the abdomen and magnetic resonance cholangiopancreatography revealed common bile duct dilatation with an ill-defined lesion in the periampullary region. Endoscopic retrograde cholangiopancreatography showed infiltration of the ampulla. Biopsy specimen taken during stenting of the common bile duct suggested dysplasia. Because of recurrent jaundice, the patient was referred to our institution, and contrast-enhanced computed tomography (CT) of the abdomen showed a hypoenhancing lesion with ill-defined margins in the head of the pancreas. The patient underwent a Whipple procedure. Microscopic examination of the pancreaticoduodenectomy specimen showed an invasive adenosquamous tumor arising from the distal part of the common bile duct that infiltrated the body and head of the pancreas, involved the wall of the duodenum, and reached the duodenal mucosa. Morphologic diagnosis was supported by immunohistochemistry profile. Postoperative contrast-enhanced CT of the abdomen showed multiple enlarged mesenteric lymph nodes and multiple lesions in both lobes of the liver, suggestive of metastasis. The patient died 1 week after surgery. Conclusion: Because the clinical, pathologic, and prognostic characteristics of adenosquamous carcinoma are poorly known, early diagnosis of this rare entity is warranted for patient management., (©2022 by the author(s); Creative Commons Attribution License (CC BY).)

Achalasia cardia is an oesophageal motility disorder characterised by aperistalsis and failure of relaxation of the lower oesophageal sphincter. The management is predominantly palliative with focus on addressing the sphincter that involves either pneumatic dilatation or Heller myotomy which relieves dysphagia in the majority of the cases. End-stage achalasia (ESA) is characterised by failed myotomy, massively dilated and tortuous oesophagus with nutritional deterioration due to progressive dysphagia and vomiting. In these subgroups of patients, oesophagectomy may be the last resort. While oesophagectomy has been described for ESA before, thoracoscopic oesophagectomy has not been reported previously. Hereby, we report our experience of performing minimally invasive oesophagectomy (thoracoscopic) with the gastric pull-up., Competing Interests: There are no conflicts of interest

Entamoeba histolytica infection can lead to colitis, peri-colic abscess, ameboma, perforation and rarely colonic stricture. Amebic colitis is usually managed with medical management and rarely needs surgical management. We hereby report a case of colonic amebiasis, presenting as a stricture in transverse colon, mimicking malignancy, and managed successfully., Competing Interests: There are no conflicts of interest.