Langerhans cell sarcoma arising after antecedent Langerhans cell histiocytosis in lymphoepithelial sialadenitis of Sjögren's syndrome. Issue 7 (18th May 2022) - Mihara, Yumi; Miura, Shiro; Mori, Ayaka; Miyazaki, Atsushi; Nagayama, Hiroki; Kitanosono, Hideaki; Soeda, Momoko; Sato, Shunsuke; Ito, Masahiro; Yamakawa, Mitsunori