Two cases of axillary lymphadenopathy diagnosed as diffuse large B‐cell lymphoma developed shortly after BNT162b2 COVID‐19 vaccination. (18th April 2022) - Mizutani, M.; Mitsui, H.; Amano, T.; Ogawa, Y.; Deguchi, N.; Shimada, S.; Miwa, A.; Kawamura, T.; Ogido, Y.