囊腫 nángzhǒng cyst Origin Definitions Defs Strokes Stroke Words Sentences Sents 皮脂腺囊肿 pízhīxiànnángzhǒng sebaceous cyst a benign, painless cyst formed by the accumulation of secretions in a sebaceous gland, commonly occurring on the scalp, face, and shoulders腘窝囊肿 guówōnángzhǒng Baker's cyst popliteal cyst; a fluid-filled swelling that develops at the back of the knee