Never frown, always smile. Never let people know your pain.
But that's a lie, you can tell me, what is in your brain.
No worries, life is good ...
I will tell you when I'm in the mood.
胸骨の痛み
腫瘍
骨の腫瘍
良性：多発性骨軟骨腫、骨巨細胞腫、多発性内軟骨腫など
悪性：軟骨肉腫、ユーイング肉腫、骨肉種など
いっぱいある