fibrocystic breast disease vs cystic breast disease

fibrocystic breast disease and cystic breast disease both are nouns.

Word	Noun	Adjective	Verb	Adverb
fibrocystic breast disease	Yes	No	No	No
cystic breast disease	Yes	No	No	No

As nouns, fibrocystic breast disease and cystic breast disease are synonyms defined as:

fibrocystic breast disease and cystic breast disease: the presence of one or more cysts in a breast

Other synonyms of fibrocystic breast disease include cystic mastitis, fibrocystic disease of the breast.

fibrocystic breast disease (noun)	cystic breast disease (noun)
the presence of one or more cysts in a breast	the presence of one or more cysts in a breast