Integrally calcified solitary fibrous tumor in the retroperitoneum: a case report and review of the literature.

Solitary fibrous tumor (SFT) is a rare stromal neoplasm and usually occurs in the thoracic cavity. We here report a case of retroperitoneal SFT with prominent calcification. A 64-year-old man presented with an incidentally detected retroperitoneal mass in the right upper abdomen.

Spontaneous hemorrhage from splenic tissue 13 years after total splenectomy: report of a case.

A 33-year-old man suffered sudden abdominal distension without traumatic episodes. He had undergone total splenectomy for hereditary spherocytosis 13 years ago. He was in shock, and his hemoglobin level was 10.

Spontaneous rupture of non-parasitic or non-neoplastic multiple and giant liver cysts: report of a case.

Simple liver cysts occasionally cause pressure symptoms of the abdomen. We herein report an extremely rare case of spontaneous rupture of simple liver cysts. A 65-year-old woman suffered abdominal fullness and dyspnea.

Gastrointestinal Obstruction due to Solitary Lymph Node Recurrence of Alpha-Fetoprotein-Producing Gastric Carcinoma with Enteroblastic Differentiation.

We report an unusual case of alpha-fetoprotein (AFP)-producing gastric carcinoma with enteroblastic differentiation. A 75-year-old woman was admitted to our hospital with occasional upper abdominal discomfort. We performed gastroscopy and observed a type 2 tumor, primarily in the pyloric region.

Ganglioneuroblastoma arising within a retroperitoneal mature cystic teratoma.

We discuss an extremely rare case of ganglioneuroblastoma arising within a retroperitoneal mature cystic teratoma. Radiological examinations showed a cystic tumor sandwiched between the pancreas and left kidney. Surgery was scheduled because the tumor seemed to have originated from the pancreas.

Metachronous pancreatic acinar cell carcinoma discovered in early stage during follow-up of breast cancer: report of a case.

We present an extremely rare case of early-stage acinar cell carcinoma of the pancreas. A 49-year-old woman, who had undergone radical surgery for breast cancer 3 years earlier, was suspected to have a rib metastasis during follow-up. She also had a family history of cancer.

Goblet cell carcinoid of the rectum with lymph node metastasis: report of a case.

We report an unusual case of goblet cell carcinoid (GCC) of the rectum. A 75-year-old man was admitted to our hospital with anal bleeding, and a hard tumor was felt on the anterior wall of the lower rectum during rectal examination. We performed colonoscopy, and found a 30-mm type 2 tumor in the lower rectum and anal canal.

[A case of emergency operation for pedicle torsion of ovarian tumor during bevacizumab therapy].

We report a case of torsion of ovarian carcinoma pedicle during chemotherapy with bevacizumab and FOLFIRI. A 47-year-old-female who had undergone laparoscopic-assisted sigmoidectomy for sigmoid cancer with multiple metastatic liver tumors, was treated with 3 courses of FOLFOX4 and 9 courses of FOLFIRI. Bevacizumab (BV) was started to administer with FOLFIRI since a CT scan had revealed that metastatic liver tumors had enlarged .

Malignant pheochromocytoma associated with pseudo-obstruction of the colon.

Effective treatment has not yet been established for intestinal pseudo-obstruction, a rare complication of malignant pheochromocytoma. We report the case of a 41-year-old man who presented with malignant pheochromocytoma associated with pseudo-obstruction of the colon. His serum catecholamine level was markedly elevated, and his large intestine was distended with gas and lodged stool.