title: Collision tumor with diffuse large B cell lymphoma and gastric cancer.
authors: Soma General Hospital, Soma Department of Nuclear Medicine and Radiology, Institute of Development, Aging and Cancer, Tohoku University, Sendai.
authors: Hisanori
authors: H
authors: Fukunaga
authors: Department of Gastroenterology and Rheumatology, Fukushima Medical University, Fukushima, Japan.
authors: Hiroyuki
authors: H
authors: Asama
authors: Soma General Hospital, Soma.
authors: Hiroyuki
authors: H
authors: Kaneda
authors: Soma General Hospital, Soma.
authors: Yuta
authors: Y
authors: Takahashi