腫
シュ, ショウ, は.れる, は.れ, は.らす, く.む, はれもの
tumor, swelling
JLPT0 G7 S13 F2145
As per 重# (run through) +
肉
flesh → *swelling*; *swell*; *tumor* (← swellings, tumors etc. running all through the body).
[Full Kanji Etymology List]