A few observations I found interesting...
~ that bronchocele was more commonly found in women, especially married(childbearing) women.
~that bronchocele was more commonly found in deep valleys, not found in sunny areas.
~that the cure was not by the knife.
~that the cure must be effected by internal means, not topical applications.
~one of the efficacious cures includes the roots of madder boiled in mutton broth. Madder is high in tannins. Tannins can act on gastrointestinal infection and can also be antiparasitical so if the goiter was due to compromised digestive function then madder would indeed effect a cure.
~ and of course sponge effects a cure. Iodine!
"Cases and remarks in surgery: to which is subjoined, an appendix, containing the method of curing the bronchocele in Coventry", by Bradford Wilmer, 1779