Gastrointestinal stromal tumor of the small bowel complicated by torsion: A case report.

Introduction: Gastrointestinal stromal tumors (GISTs) are mesenchymal tumors that originate from the gastrointestinal tract wall. Approximately 20-30 % of GISTs originate from the small intestine. GISTs of the small intestine generally present with a palpable mass, distention, and abdominal pain and may exhibit acute abdomen at the onset.

Primary spindle cell tumor originating from the liver that was difficult to diagnose.

Background: It has been reported that hepatocellular carcinoma (HCC) with spindle cell tumor accounts for 1.8% of all HCCs, but spindle cell tumors that do not show an obvious conventional HCC are extremely rare. In this report, we describe a case of resection of a primary spindle cell tumor of the liver that was difficult to diagnose.

Laparoscopic abdominal perineal rectal resection for rectal cancer with a horseshoe kidney using preoperative 3D-CT angiography: a case report.

Background: A horseshoe kidney is a congenital malformation involving the fusion of the bilateral kidneys and is often accompanied by anomalies of the ureteropelvic and vascular systems. When performing resection of colorectal cancer in a patient with horseshoe kidney, damage to the ureter or excessive renal arteries should be avoided. To achieve this purpose, comprehensive preoperative anatomical assessments and surgical planning are important.

[Diagnosis of reactive lymphoid hyperplasia of the liver and difficulty in its differentiation from a malignant tumor: a case report].

A 79-year-old woman presented with a chief complaint of abdominal pain. Imaging findings suggested hepatocellular carcinoma although the serum levels of tumor markers were within the normal range. Thus, we performed hepatectomy of S5 and components separation.

Solitary metastasis to a superior mediastinal lymph node after distal gastrectomy for gastric cancer: a case report.

Background: Mediastinal lymph node metastases occasionally occur in patients of advanced gastric cancer of the cardia with esophageal invasion, but they rarely occur in patients with gastric cancer of other sites. This report describes a case of a solitary metastasis to t a superior mediastinal lymph node after distal gastrectomy for gastric cancer of the antrum.

Case Presentation: A 70-year-old man underwent curative distal gastrectomy for advanced gastric cancer of the antrum (pT2pN2M0, stage IIB).

Curative resection by splenectomy for solitary splenic metastasis from early gastric cancer: a case report and literature review.

Background: Solitary metastasis of a malignancy to the spleen is rare, particularly for gastric cancer. Only a few case reports have documented isolated splenic metastasis from early gastric cancer. We describe a case of splenic metastasis from early gastric cancer.

Gastric hepatoid adenocarcinoma resulting in a spontaneous gastric perforation: a case report and review of the literature.

Background: Gastric hepatoid adenocarcinoma (GHAC) is an atypical form of gastric cancer (GC) that has similar tissue morphology to hepatocellular carcinoma and frequently produces alpha-fetoprotein. We present an exceedingly rare case of GHAC resulting in a spontaneous gastric perforation.

Case Presentation: A 61-year-old man presented at our institution complaining of abdominal and back pain.

[A case of advanced signet ring cell carcinoma of the appendix that responded to S-1 and docetaxel].

A 68-year-old man was admitted to our hospital after testing positive in a fecal occult blood test. He was subsequently diagnosed with advanced signet ring cell carcinoma of the appendix with disseminated peritoneal disease and ascites. Weekly chemotherapy with S-1 was commenced, and after three courses, the tumor shrunk in size and the ascites decreased.

[A case of squamous cell carcinoma of the esophagogastric junction with bulky no.7-metastatic node successfully treatedby chemoradiation followed by surgery].

The patient was a 59-year-old man showing an ulcerative tumor. He had squamous cell carcinoma diagnosed by biopsy specimens, found in the esophagogastric junction by esophagogastroduodenoscopy. Abdominal CT showed a No.