Surgical Case Reports

Delayed Enterocutaneous Fistula Following Incisional Hernia Repair Using the Plug-and-Patch Technique: A Report of a Surgically Managed Case

Kentaro Goto, et al.

INTRODUCTION: For inguinal hernia repair, the plug-and-patch technique is commonly employed. Although abdominal wall hernias are occasionally treated with plugs, their safety remains uncertain. Herein, we report a surgical case of enterocutaneous fistula occurring 18 years after incisional hernia repair using the plug-and-patch technique.

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Curatively Resected Mesenteric Lymph Node Recurrence of Ewing Sarcoma

Ayaka Tachikawa, et al.

INTRODUCTION: We report herein a rare case of Ewing sarcoma that metastasized to the mesenteric lymph nodes.

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Nipple-Sparing Mastectomy and Immediate Breast Reconstruction with da Vinci SP Surgical System: The First Case in Japan

Yuko Kijima, et al.

INTRODUCTION: Nipple-sparing mastectomy (NSM) has been increasingly used therapeutically for breast cancer patients in whom the nipple-areolar complex is not involved, being associated with better esthetic results and QOL than skin-sparing mastectomy. Robotic nipple-sparing mastectomies (R-NSM) using da Vinci SP surgical system (Intuitive Surgical, Sunnyvale, CA, USA) with immediate breast reconstruction (IBR) has been reported as a suitable surgical treatment for early breast cancers. We present a patient who underwent R-NSM and IBR, with excellent results. To our knowledge, this is the 1st reported case of R-NSM and IBR using the da Vinci SP surgical system in Japan.

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Thymic Amyloidosis Mimicking Thymoma: A Case Report

Asuka Tomida, et al.

INTRODUCTION: The most common anterior mediastinal tumors are thymic epithelial tumors, including thymoma, and other kinds of diseases are relatively rare. Here, we report our experience in treating a patient with amyloidosis of the thymus, a very rare type of mediastinal lesion.

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A Case of Gastric Neuroendocrine Carcinoma with Disseminated Recurrence 14 Years after Initial Surgery

Takara Kinjo, et al.

INTRODUCTION: Gastric neuroendocrine carcinoma (NEC) is a rare disease among gastric cancers, accounting for only 0.1%–0.6% of all cases. This disease is known to have a poor prognosis and a higher risk of recurrence compared to conventional gastric adenocarcinoma.

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Pelvic Malignant Tumor with Liver Metastasis is Actually Conventional Leiomyoma with Abdominal Metastasis

Jingjun Yang et al.

INTRODUCTION: For this case, when the preoperative diagnosis indicated malignant tumor with metastasis, intraoperative frozen section examination was performed to adjust the surgical plan accordingly. This approach helped avoid overtreatment, minimizing the patient’s pain and surgical trauma. This case holds educational significance.

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Anaplastic Sarcoma of the Kidney in a Child with DICER1 Syndrome: A Case Report

Eri Nagasaki-Maeoka et al.

INTRODUCTION: Anaplastic sarcoma of the kidney (ASK) is a rare renal tumor, with fewer than 50 cases reported in the literature since 2007. ASK is pathologically characterized by the presence of cystic and solid areas consisting of spindle cells showing marked anaplasia. Recent studies have reported that the vast majority of patients with ASK have DICER1 variants, and that these tumors are part of the DICER1 syndrome, a hereditary cancer predisposition disorder. Herein, we report a pediatric case of this rare tumor, including pathological findings, DICER1 gene analysis of the tumor and peripheral blood samples, and the disease course.

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Detorsion of Wandering Spleen Causes Significant Hypersplenism Resulting in Thrombocytopenia and Spinal Cord Injury: A Case Report

Yui Innami et al.

INTRODUCTION: We report the case of a child who underwent splenectomy and developed marked thrombocytopenia after detorsion due to wandering splenic torsion.

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Asymptomatic Splenic Infarction Following Total Gastrectomy: A Case Report

Atsuhito Takagi, et al.

INTRODUCTION: Splenic infarction is a disease that develops as a result of a thrombotic predisposition. Most areas of malperfusion are usually small and unnoticeable. However, when massive infarction occurs, it is often diagnosed after the onset of clinical symptoms, such as abdominal pain or fever. In contrast, asymptomatic postoperative extensive splenic infarction is occasionally observed. Although conservative management is generally the first-line treatment for splenic infarction, surgical intervention is indicated in cases complicated by splenic abscess or rupture. Some reports suggest that extensive splenic infarction may result in atrophy or complete loss of the spleen over time.

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A Case of Spontaneous Regression of Primary Tumor after Adrenalectomy for Primary Lung Cancer with Synchronous Adrenal Metastasis

Hisaya Chikaraishi, et al.

INTRODUCTION: Adrenal metastasis from primary lung cancer is relatively common, occurring in approximately 5%–10% of clinical cases. Long-term survival can be achieved through surgical resection of adrenal metastases in addition to primary lesions. Spontaneous regression of cancer is defined as the partial shrinkage or complete disappearance of cancer following no treatment or treatment considered ineffective against cancer. Spontaneous regression of non-small cell lung cancer (NSCLC) is rare. Here, we describe a case of NSCLC with adrenal metastasis, in which the primary tumor exhibited spontaneous regression and was pathologically absent following surgical treatment of the metastatic lesion.

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Resectable Pancreatic Adenocarcinomas following Neoadjuvant Chemotherapy with Gemcitabine Plus S-1: Two Case Reports of Opposite Oncological Outcomes

Masanobu Taguchi et al.

INTRODUCTION: Neoadjuvant gemcitabine plus S-1 (GS) therapy for resectable pancreatic cancer has been shown to prolong overall survival significantly compared with upfront surgery. Herein, we report two opposite cases of patients with resectable pancreatic cancer who underwent distal pancreatectomy after neoadjuvant GS therapy.

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Simultaneous Resection of Esophageal Carcinosarcoma with Cancer of the Stomach and Transverse Colon: A Case Report

Kenichi Mizunuma, et al.

INTRODUCTION: Esophageal carcinosarcoma is a rare malignant neoplasm composed of both carcinoma and sarcoma components. Here, we report a case of esophageal carcinosarcoma in a patient with cancers of the transverse colon and stomach who underwent simultaneous resection of all 3 malignancies.

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