Surgical Case Reports

The Realization of a Remote Robotic Breast Surgery

Fujun Shi, et al.

INTRODUCTION: While remote telesurgery has advanced fields like urology and general surgery, its application in breast oncology remains unreported. We present a successful case of remote robotic nipple-sparing mastectomy (rNSM), which preliminarily confirms its technical feasibility and perioperative safety.

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Jejunal Metastasis from Malignant Pleural Mesothelioma during Long-Term Nivolumab Therapy: A Case Report and Literature Review

Hitoshi Minagi,et al.

INTRODUCTION: Gastrointestinal metastasis from malignant pleural mesothelioma (MPM) is exceedingly rare and lacks a standardized diagnostic work-up

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Solitary Hepatic Metastasis of Thymoma: A Case Report

Hiroshi Sakai, et al.

INTRODUCTION: Hepatic recurrence of thymomas is uncommon and its surgical treatment has rarely been reported. We report the case of a patient who underwent surgical resection for a solitary liver metastasis of a thymoma.

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A Successfully Treated Case of Pediatric Traumatic Gastric Rupture Caused by Seat Belt Injury

Yumiko Tabata, et al.

INTRODUCTION: Gastrointestinal tract injury is estimated to occur in 0.9%–1% of blunt trauma cases, with gastric rupture occurring in approximately 3% of these cases. Blunt trauma injuries of the stomach are rare. In comparison to solid organ injuries, gastrointestinal tract injuries are less likely to be accompanied by hemorrhaging that can cause hemorrhagic shock, and the process is considered to be relatively slow.

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Rupture of a Hepatic Hemangioma in the Remnant Liver Following Hybrid Extended Left Hemihepatectomy in a Living Liver Donor: A Case Report

Rei Tsunoda, et al.

INTRODUCTION: Hepatic hemangiomas have occasionally been identified in donor liver grafts. However, rupture of a hemangioma in the remnant liver following liver graft harvest in a living donor has not been documented.

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Gastric Regional Lymph Node Metastases from a Squamous Cell Carcinoma of Unknown Primary Site: A Case Report

Toshiaki Komo, et al.

INTRODUCTION: A cancer of unknown primary site is a malignant tumor for which the primary site is unknown despite a thorough examination, and which has been histologically proven to be a metastatic lesion. Metastases to intraperitoneal and to gastric regional lymph nodes are rare.

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A Rare Case of Gastric Aberrant Pancreas Causing Bleeding from a Gastric Ulcer

Tsuyoshi Saito, et al.

INTRODUCTION: An aberrant pancreas is pancreatic tissue lacking anatomical and vascular continuity with the normal pancreas. It typically occurs in the gastrointestinal tract, especially in the stomach, duodenum, and small intestine. Most cases are asymptomatic and discovered incidentally during imaging or surgery. Gastric aberrant pancreas rarely presents with bleeding, making diagnosis and treatment decisions challenging.

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Surgical Management of Breast Cancer Adjacent to a Calcified Ventriculoperitoneal Shunt: A Case Report

Hitomi Wake, et al.

INTRODUCTION: Breast cancer arising in tissue adjacent to a ventriculoperitoneal (VP) shunt is exceptionally rare, and there is little guidance on how to manage the shunt hardware during oncologic surgery in such cases.

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Mesenteric Steal Syndrome Caused by Abdominal Aortic Stenosis due to Takayasu Arteritis

Shoichiro Nagashima, et al.

INTRODUCTION: Chronic mesenteric ischemia (CMI) is usually caused by atherosclerotic stenosis of multiple mesenteric arteries. However, aortic stenosis secondary to Takayasu arteritis can rarely cause intestinal ischemia through hemodynamic steal from the mesenteric to lower limb circulation.

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Pathological Complete Response Achieved with Colorectal Cancer-Based Chemotherapy for Locally Recurrent Cecal Neuroendocrine Carcinoma after Surgery: A Case Report

Kana Kajisako, et al.

INTRODUCTION: Primary neuroendocrine carcinoma (NEC) of the colon is extremely rare, accounting for only 0.2% of all colorectal malignancies, and is associated with a poor prognosis. Early diagnosis is often challenging, as endoscopic biopsies are frequently misinterpreted as adenocarcinoma. Although platinum-based regimens such as etoposide plus cisplatin or irinotecan are commonly used, no standard chemotherapy protocol has been established. We report a case of locally recurrent cecal NEC that responded remarkably to a colorectal cancer–based chemotherapy regimen, achieving a pathological complete response.

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Ventricular Septal Perforation Associated with Takotsubo Syndrome and Its Pathogenic Mechanisms

Masaru Yoshikai, et al.

INTRODUCTION: Takotsubo syndrome (TTS), once considered a benign self-limiting disease, is now recognized to have substantial short-term morbidity and mortality. During the acute phase, it can result in severe heart failure, cardiogenic shock, arrhythmias, cardiac rupture, ventricular septal perforation (VSP), and thromboembolic events, with in-hospital mortality rates comparable to those observed in acute coronary syndrome. Although VSP is rare, it represents a potentially lethal complication of TTS. Herein, we present a case of VSP associated with TTS and discuss a mechanism for the development of VSP in TTS.

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Posterior Single-Direction Approach for Thoracoscopic Combined S2+S6 Segmentectomy in Fused Fissure: A Case Report

Yasuhiro Nakashima, et al.

INTRODUCTION: Segmentectomy in cases with fused fissures poses technical challenges due to increased risks of air leakage, as reported in lobectomy. The single-direction approach avoids fissure manipulation through hilar-first dissection but has been rarely reported for posterior segments. We report the first case of a posterior single-direction approach for combined S2+S6 segmentectomy in a patient with a tumor located in an incomplete right interlobar fissure.

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