Central nervous system lymphoma with the "target sign" on magnetic resonance imaging mimicking cerebral toxoplasmosis. Issue 1 (January 2014) - Koike, Yuka; Sato, Tomoe; Ouchi, Haruka; Shimbo, Junsuke; Sato, Aki; Igarashi, Shuichi; Natsumeda, Manabu; Sasaki, Osamu; Hashidate, Hideyuki; Nikkuni, Koji; Okamoto, Kouichirou