You already know how things are with fevers that accompany external tumors, and you know that in most cases they belong to the genus of one-day fevers, for from such tumors it is most often the heat that comes to the heart, and not the clayey matter contained in them, and Such fevers mostly occur from external causes. When putrefaction comes from tumors, due to their large size or proximity to the heart, then a fever occurs that does not belong to the genus of day-olds. Most often, such fevers begin from previous causes, physical, and from various types of overflow, and sometimes they arise as a result of ulcers, to which bad juices rush and linger in loose meat.
As for the fevers that accompany internal tumors, they almost never occur because heat penetrates to the heart without putrefaction. The worst fevers due to internal tumors are fevers from erysipelas in any internal organs, when there is severe pain, thirst and burning; Signs of an abundant admixture of bile and blood indicate such a fever. Similar internal tumors are, for example, tumors of the brain and its membranes, and sometimes tumors in the ear canal, in the throat and in the membrane adjacent to the chest, as well as tumors in the kidneys, in the bladder, in the uterus, in the intestines and similar organs; Fever with such tumors sometimes differs in strength and weakness, depending on whether they are close or far from the heart. With tumors in fleshy organs, the fever is stronger, and with tumors in membranous organs and the like, they are weaker. If the tumor is in the vicinity of the arteries, then the fever is stronger, and if it is in the vicinity of only the veins, then the fever is weaker. Such fevers are necessarily characterized by periods, due to the fact that matter, as it arises, periodically pours out towards the tumors, as well as the movement of matter and the attraction of heat and pain to the tumor; Each juice has a corresponding periodicity.
Know that often tumors in pleurisy and other diseases are cured, but the fever remains; this indicates that purification has not occurred. Such fevers, if prolonged, lead to tabes, especially when the tumors are in the liver; As for tumors in the membranes, when they harden, they do not allow time to reach dryness.