Shimomura K

Extraskeletal osteosarcoma is a rare malignant tumor with an osteoid or bone matrix that develops in soft tissues that are not in contact with bone or periosteum. A 47-year-old woman presented with a subcutaneous mass in her right abdomen. …

Massive gastrointestinal bleeding from gastrointestinal varices is one of the most serious complications in patients with portal hypertension. However, if no bleeding point can be detected by endoscopy in the predilection sites of gastroint…