NCAM1 and adult T-cell leukemia/lymphoma: Endoscopically, six MEITL (67%), five ATLL (46%), and two other group (EBV+ CD56+ TNKCL and indolent TLPD) (29%) patients showed diffuse infiltrating type lesions, among which four MEITL patients showed edematous mucosa (Fig. 2a, b), and three and two ATLL patients showed mainly aphthoid erosion (Fig. 2c, d) and edematous mucosa (Fig. 2e, f), respectively.