How about a small castor oil pack?

From 'The One Earch Herbal sourcebook - Everything you need to know about Chines, Western, and Ayurvedic Herbal Treatments - by Alan Keith Tillotson'

'use castor oil primarily as an external preparation, as packs placed over swollen glands, cancers, cysts, hard swellings, and other abnormal growths. The oil seems to stimulate the lymphatic system to draw away poisons...'

Hope this helps,
Anne Tweet