Successful Right Upper Lung Segmentectomy after Esophagectomy: Utilization of 4K 3-Dimensional Endoscopy and Near-Infrared Fluorescence in High-Risk Surgery

Masaya Otabe, et al.

INTRODUCTION: Lung resection after open esophagectomy poses significant technical challenges, particularly when the reconstructed gastrointestinal tract is on the same side as the lung lesion. The advent of 4K 3-dimensional (3D) endoscopic systems with near-infrared (NIR) fluorescence imaging using indocyanine green (ICG) has improved the precision of thoracic surgeries. We present a case of successful right upper lung segmentectomy for primary lung cancer after open esophagectomy, utilizing a 4K 3D endoscopic system and NIR imaging.

Spontaneous Regression of Advanced Transverse Colon Cancer: A Case Report

Shinya Ohno, et al.

INTRODUCTION: The incidence of spontaneous regression (SR) of malignancy is one in 60000–100000 cancer patients and spontaneous regression in colorectal cancer is quite rare, reported to account for less than 2% of spontaneous regression of malignancy. In recent years, some reports of spontaneous regression in colorectal cancer in patients with high-frequency microsatellite instability have suggested a deep association between high-frequency microsatellite instability and spontaneous regression.

Surgical Resection of a Pseudoaneurysm of the First Dorsal Metatarsal Artery after Unsuccessful Embolization: A Case Report and Literature Review

Hiroto Yasumura, et al.

INTRODUCTION: Aneurysms of peripheral foot arteries are extremely rare. Dorsalis pedis artery aneurysms account for 0.5% of peripheral artery aneurysms of the lower limbs. Here, we present a case of pseudoaneurysm of the first dorsal metatarsal artery of the foot and discuss the therapeutic strategy based on a literature review.

Omental Torsion Diagnosed and Treated with Single-Incision Laparoscopic Surgery in 2 Pediatric Patients: A Case Report

Shohei Maekawa, et al.

INTRODUCTION: Omental torsion (OT), caused by twisting of the greater omentum around its axis, leading to reduced blood supply to the distal aspect of the omentum and tissue infarction, is a rare disease that manifests clinically as acute abdominal pain. Accurate preoperative diagnosis is difficult. Here, we present 2 pediatric patients diagnosed and treated using computed tomography (CT).

Anterior Mediastinal Lymph Node Metastasis of Intrahepatic Cholangiocarcinoma: A Case Report and Literature Review

Tomoaki Tabata, et al.

INTRODUCTION: Intrahepatic cholangiocarcinoma (ICC) is the second most common liver malignant tumor with a poor prognosis. Lymph node (LN) metastasis is found in 15% of ICC at the time of initial diagnosis. However, the LN metastasis to the anterior mediastinum is extremely rare. Herein, we report a case of anterior mediastinal LN metastasis of ICC.

Extra-Lobar Lung Sequestration Infarction That Caused Sudden Back Pain: An Adult Case of Surgical Resection

Noriyoshi Sawabata, et al.

INTRODUCTION: Ischemia in extra-lobar pulmonary sequestration is rare and mostly occurs in childhood; it is uncommon in adults but can be progressive, necessitating surgical removal.

Intrahepatic Cholangiocarcinoma with <i>BRCA</i> Mutation Achieved Pathological Complete Response after Neoadjuvant Gemcitabine, Cisplatin, and S-1 Therapy: A Case Report

Yoshifumi Morita, et al.

INTRODUCTION: Intrahepatic cholangiocarcinoma (ICC) is a highly malignant cancer for which surgery is the only curative treatment. The prognosis of ICC is extremely poor, especially in cases of lymph node metastasis (LNM), owing to the high postoperative recurrence rate. Herein, we present a case of advanced ICC with a breast cancer susceptibility gene-2 (BRCA2) mutation, treated with preoperative chemotherapy, including cisplatin, followed by surgery, in which we achieved a pathologic complete response.

A Case of Graves’ Disease in a Patient with Kartagener’s Syndrome (Complete Visceral Inversion, Chronic Sinusitis, and Bronchiectasis)

Naoyoshi Onoda, et al.

INTRODUCTION: Kartagener’s syndrome (KS) is a rare disease characterized by a triad of situs inversus totalis, chronic sinusitis, and bronchiectasis. The disorder is caused by a hereditary genetic abnormality that impairs ciliary movement. Although aberrant pass course of the inferior laryngeal nerves due to visceral inversion should be considered during thyroid surgery in patients with KS, no report of surgical treatment for Graves’ disease (GD) in patients with KS has been found to date.

Hybrid Extended Totally Extraperitoneal Transversus Abdominis Release for Ruptured Incisional Hernia Etiologically Very Similar to Flood Syndrome: A Case Report

Mariko Sambommatsu, et al.

INTRODUCTION: The rupture of an umbilical hernia, which is known as Flood syndrome, is a rare and life-threatening complication of liver cirrhosis. Herein, we report the successful repair of a ruptured incisional hernia accompanied by liver cirrhosis.

Laparoscopic Abdominoperineal Resection of Undifferentiated Spindle Cell Sarcomas of the Rectum with Lymph Node Metastases: A Rare Case Report

Ryo Shibayama, et al.

INTRODUCTION: Undifferentiated sarcomas of the gastrointestinal tract are rare and have poor prognoses, especially those with lymph node metastases. There is no consensus on the treatment plan. While there are reports on undifferentiated pleomorphic sarcomas of the rectum, no reports on undifferentiated rectal spindle sarcomas with lymph node metastases have been presented previously.

Sebaceous Carcinoma of the Breast in a Japanese Male with a <i>BRCA2</i> Pathogenic Variant: Report of an Exceedingly Rare Case and Review of the Literature

Mamika Kuribayashi, et al.

INTRODUCTION: Sebaceous carcinoma (SC) is a malignant neoplasm differentiated from the mature sebocyte and occurs mainly in the periorbital area. However, SC of the breast is extremely rare. We report a case of sebaceous breast carcinoma in a Japanese man with a BRCA2 pathogenic variant.

Outcome of Surgical Intervention for Intrathoracic Lymph Node Metastasis in Uterine and Ovarian Cancer without Lung Metastasis: A Report of Three Cases

Ryohei Miyazaki, et al.

INTRODUCTION: Metastasis to the hilar and mediastinal lymph nodes in gynecological cancer is rare, and isolated hilar or mediastinal lymph node metastases are even rarer. In this report, we describe the results of lymph node dissection performed on 3 patients with hilar mediastinal lymph node metastasis but no lung metastasis from uterine or ovarian cancer.