Tumors of this kind, being of congenital origin, are very naturally observed most frequently in young cattle, but they may continue to expand for a period of several months after the birth of the calf, even until they become troublesome and unsightly.
Treatment for dental cysts.—Treatment consists in the complete extirpation of the cyst and the destruction of the lining pouch by curetting.
RETENTION CYSTS.
Retention cysts arise from the retention of normal secretions, owing to obstruction of a duct leading from a gland. The mucous cysts found in the mouth, udder, and vestibule of cows are samples of this form.
MUCOUS CYSTS.—Saclike dependent tumors, caused by retention of the secretions from the mucous glands, sometimes develop in the mouth, nose, pharynx, and vulva of cattle. They are called "mucous cysts." These are of sizes varying from peas to pigeon eggs, are roundish and translucent, and surrounded by a delicate, vascular membrane. They contain a siruplike substance more or less thick and transparent and whitish yellow in color.
Treatment consists in the puncturing of the swelling, if accessible, and the destruction of the cyst walls by the injection of Lugol's solution.
PROLIFERATION CYSTS.
These are found especially in the ovaries of cows, called "cystic ovaries," and may produce nymphomania (chronic bulling).
The treatment indicated in this case is the removal of the diseased ovaries.