腮腺炎 (sāixiànyán): mumps

Meanings

Tā xiǎoshí hòu dé guò sāixiànyán.

He had mumps when he was young.

Sāixiànyán huì dǎozhì sāi bù zhǒngzhàng.

Mumps causes swelling of the cheeks.

memory

腮 = cheek/jawbone area, 腺 = gland, 炎 = inflammation. So 腮腺炎 = 'cheek gland inflammation' = mumps. The word describes the condition perfectly.

腮 sāi

腺 xiàn

炎 yán