Right Paraduodenal Hernia and Review of CT Signs to Diagnosis: First Case Report in Viet Nam

Phu Thanh Lam Nguyen, et al.

INTRODUCTION: Paraduodenal hernia (PDH), a rare cause of acute abdominal pain in the emergency department, is difficult to diagnose and can cause serious issues by mimicking common conditions.

Crohn’s Disease Complicated by Retroperitoneal Abscess and Fistula Treated with Single-Incision Laparoscopic Subtotal Colectomy: A Case Report

Tomohiro Minagawa, et al.

INTRODUCTION: Crohn’s disease (CD) can be complicated by complex fistulas and abscesses, and laparoscopic surgery for such cases is difficult. We report a patient with CD who developed a complex fistula and retroperitoneal abscess that were treated using single-incision laparoscopic surgery.

Aberrant Right Subclavian Artery-Induced Esophageal Stenosis Successfully Treated with Vascular Reconstruction: A Pediatric Case Report

Wataru Sumida, et al.

INTRODUCTION: Aberrant right subclavian artery (ARSA) is the most common congenital anomaly of the subclavian artery, occurring in 0.2%–1.5% of the population. While typically asymptomatic, ARSA can cause dysphagia in older patients due to esophageal compression. In pediatric cases, it is less frequent and usually presents with chronic respiratory symptoms resulting from tracheal compression. Acute respiratory failure as a presentation of ARSA is extremely rare. This case report describes a pediatric patient with ARSA-associated esophageal stricture, leading to severe respiratory distress following food intake and requiring surgical treatment.

Successful Complete Laparoscopic Resection of Benign Peritoneal Multicystic Mesothelioma Adherent to the Ascending Colon: A Case Report

Yoshihito Kitamura, et al.

INTRODUCTION: Benign peritoneal multicystic mesothelioma (BPMM) is a rare mesothelial tumor with a high local recurrence rate and potential for malignant transformation. It predominantly affects women of reproductive age and is often associated with prior abdominal surgery or inflammation. Complete surgical resection is the standard treatment; however, tumor recurrence remains a concern. BPMM occurring outside the pelvis is extremely rare, and lesions requiring colectomy because of adherence to the gastrointestinal tract are infrequent.

Cardiac Schwannoma: A Clinical Case Report and Diagnostic Perspectives

Peipei Zhang

INTRODUCTION: Primary cardiac schwannoma (PCS) is an exceptionally rare neurogenic tumor, with only 53 documented cases worldwide.

Early Liver Metastasis from Early Gastric Adenocarcinoma with a Small Neuroendocrine Carcinoma Component: A Case Report

Takahisa Hirano, et al.

INTRODUCTION: Gastric neuroendocrine carcinoma (NEC) is a rare histological subtype of gastric malignancy. A small NEC component may coexist with gastric adenocarcinoma, making preoperative diagnosis challenging. Currently, no established treatment strategies exist for cases in which an NEC component is identified only in postoperative pathological findings.

An Extremely Uncommon Case of an Internal Thoracic Vein Aneurysm

Ryo Karita, et al.

INTRODUCTION: Venous aneurysms in the anterior mediastinum are rare. While there are scattered reports on thoracic venous aneurysms, such as those involving the azygos or brachiocephalic veins, those involving the internal thoracic vein are exceedingly rare. We herein report the case of an internal thoracic venous aneurysm that was initially suspected of being a tumor and diagnosed intraoperatively.

Successful Two-Stage Surgery with Preoperative Endoscopic Evaluation for Perforated Multiple Jejunal Diverticula in a Patient with Autosomal Dominant Polycystic Kidney Disease: A Case Report

Ken Yonemitsu, et al.

INTRODUCTION: Jejunal diverticulosis is a rare condition, often asymptomatic, but it can lead to serious complications such as diverticulitis or perforation. Management of perforated jejunal diverticula is challenging, particularly in patients with autosomal dominant polycystic kidney disease (ADPKD) who have undergone kidney transplantation and are receiving immunosuppressive therapy. Early diagnosis is often difficult due to nonspecific symptoms and the frequent presence of multiple diverticula, which increases the risk of postoperative complications.

Concurrent Prolapsed Omphalocele and Giant Hepatic Cyst Initially Suspected as an Umbilical Cord Cyst in the Prenatal Period: A Case Report

Yuta Takeuchi, et al.

INTRODUCTION: Umbilical cord cysts detected after the 2nd trimester of pregnancy are associated with a variety of complications, including omphalocele, and thus require careful monitoring. Congenital hepatic cysts are rare, as are reports of their coexistence with omphaloceles. Herein, we present an unusual case of an omphalocele complicated by a large hepatic cyst that was initially suspected to be an umbilical cord cyst during the fetal period.

Advanced Intra-Thoracic Ultrasound-Guided Thoracoscopic Lung Resection: A Case Report

Yukiko Matsui, et al.

INTRODUCTION: Minimally invasive surgery has recently become the standard approach for pulmonary lesion resection, and its usefulness has been reported. However, these techniques involve small incisions, making intraoperative palpation difficult. Therefore, a simple and minimally invasive method is required to identify these lesions. Herein, we present a case of thoracoscopic lung wedge resection in which intra-thoracic ultrasonography equipped with a new technology was successfully used for lesion localization.

Early Brain Metastasis despite Pathological Complete Response after Radical Resection for Esophageal Cancer following Chemotherapy and Pembrolizumab

Tetsuhiro Urashima, et al.

INTRODUCTION: Brain metastasis from esophageal cancer is rare. In particular, recurrent brain metastasis following multimodal treatment, such as preoperative chemotherapy and surgical resection, is extremely uncommon. We present a case of early brain metastasis from esophageal cancer despite achieving pathological complete response (pCR).

Esophageal Bypass Surgery for an Esophagobronchial Fistula Following Palliative Irradiation for Left Main Bronchial Obstruction Caused by Mediastinal Malignant Lymphoma

Byonggu An, et al.

INTRODUCTION: Central airway obstruction (CAO) due to malignancy is an oncological emergency that requires prompt management. On the other hand, esophagobronchial fistula (EBF) is also a serious condition that can lead to aspiration pneumonia and difficulty with oral intake. Secondary involvement due to malignant lymphoma is a very rare cause of both CAO and EBF. Here, we report a case of esophageal bypass surgery for an EBF that became apparent after palliative irradiation for left main bronchial obstruction caused by mediastinal malignant lymphoma.