Performance Evaluation of Open-Source Large Language Models for Assisting Pathology Report Writing in Japanese. - Masataka Kawai; Singo Sakashita; Shumpei Ishikawa; Shogo Watanabe; Anna Matsuoka; Mikio Sakurai; Yasuto Fujimoto; Yoshiyuki Takahara; Atsushi Ohara; Hirohiko Miyake; Genichiro Ishii (CoRR, 2026)