First Department of Medicine;
Hamamatsu University School of Medicine;
1-20-1 Handayama;
Higashi-ku;
Hamamatsu 431-3192;
Japan;
Center for Clinical Research;
Hamamatsu University School of Medicine;
1-20-1 Handayama;
Higashi-ku;
Hamamatsu 431-3192;
Japan;
Cytomegalovirus; colitis; Vanishing; tumor; Elderly; adult; Inflammatory; pseudotumor; Immunocompetent; host;