A form of irritation of the scrotum at times occurs in dogs, which if neglected may take on a malignant type and become cancer scroti.

Causation

The irritation is largely confined to older dogs. Of its predisposing and exciting causes but little is known. It is conjectured that general constitutional derangements aid largely in its production. When the true cancer scroti manifests itself, it is assumed that constant local irritation has no small share in inducing the disease.

Symptoms

The usual signs of inflammation characterize the appearance of the affection. The parts become reddened, swollen, and sensitive; little pimples or pustules appear which soon discharge and a scab is formed. These scabs when removed or thrown off leave the skin beneath inflamed and very sensitive. Ulceration rapidly follows this condition unless prevented by treatment, and the tissues take on a process of induration or hardening which very likely will be permanent. The ulceration may assume a dangerous, cancerous type, progressive and resulting in a general destruction of the parts.

Treatment

The diet should at once be restricted on the appearance of the disease, and a free cathartic be given. Cold applications are indicated, and to a pint of ice water add the following. -

℞ Acid. Acet. dil. ℥ ij.

Tinct. Opii ℥ i.

Liq. Plumbi Subacet. ℥ iss Ft. Mist. Sig. Add to a pint of water and use externally.

This preparation is to be applied by thoroughly wetting in it a thin cloth folded twice, and then enveloping the whole scrotum. This cloth should be frequently dampened by the solution, and may be kept in place by a bandage passed between the legs and secured around the loins in much the same way a napkin is adjusted on a child. This treatment should be persisted in until the crusts or scabs fall off. Should the skin then become ulcerated, paint the sores lightly with carbolic acid, and afterwards apply the oxide of zinc ointment.

During the local treatment it will be wise to give Fowler's solution of arsenic, four drops twice daily with the food, which should be made up largely of bread and milk, beef tea, and other unstimulating ingredients.