CHAP. XVI. Of an Oedema, or cold Phlegmatick Tumor.
HItherto we have treated of hot Tumors, now we must speak of cold; Cold Tumors are only two,* 1.1 an Oedema, and a Scirrhus. And for all that Hippocrates and the Ancients used the word Oedema, for all sorts of Tumors, in general; yet by Galen and those Physitians which succeeded him, it hath been drawn from that large and general signification, to a more strait and special, only to design a certain species, or kind of Tumor.
* 1.2Wherefore an Oedema is a soft, lax, and painless Tumor, caused by collection of a Phlegmatick humor.
* 1.3The Ancients made eight differences of Tumors proceeding of Phlegm: The first they termed a true and lawful Oedema proceeding from natural Phlegm; from unnatural Phlegm by admixti∣on of another humor they would have three sorts of Tumors to arise; is that, by mixture of blood, should be made an Oedema Phlegmonedes, and so of the rest.
Besides, when they perceived unnatural Phlegm either puffed up by flatulency, or to flow with a waterish moisture, they called some Oedema's flatulent, others waterish; but also when they saw this same Phlegm often to turn into a certain Plaister-like substance, they thought that hence proceeded another kind of Oedema, which they expressed one while by the name of Atheroma, a∣nother while by Steatoma, and sometimes by Melicerides, as lastly, they called that kind of Oedema which is caused by putrid and corrupt flegm,* 1.4 Scrophule. For we must observe that Phlegm some∣times is natural, & offends only in quantity; whence the true Oedema proceeds: otherwhiles it is not natural; and it becomes not natural, either by admixtion of a strange substance, as bloud, choler, or Melancholy, whence arise the three kinds of Oedema's noted formerly by the way; or by the putridness and corruptions of its proper substance, whence the Strumae and Scrophulae proceed; or by concretion, whence kernels and all kinds of Wens, Ganglia, and knots; or by resolution, whence all flatulent and waterish Tumors, as the Hydrocele, Pneumat••cele, and all kinds of Dropsies.
* 1.5The causes of all Oedema's are the defluxion of a Phlegmatick, or flatulent humor into any part, or the congestion of the same made by little and little in any part, by reason of the imbecillity thereof in concocting the nourishment, and expelling the excrement.
* 1.6The signs are a colour whitish and like unto the skin, a sort Tumor, rare and laxe by reason of the plentiful moisture with which it abounds, and without pain, by reason this humor infers no sense of heat nor manifest cold; when you press it with your finger the print thereof remains, because of the grosness of the humor and slowness to motion.* 1.7 Oedema's breed rather in Winter than in Summer, because Winter is fitter to heap up Phlegm; they chiefly possess the Nervous and Glandulous parts, because they are bloudless, and so cold and more fit by reason of their loos∣ness to receive a defluxion; for the same cause, bodies full of ill humors, ancient, and not exer∣cised, are chiefly troubled with this kind of Tumor.
* 1.8An Oedema is terminated sometimes by resolution, but oftner by concretion; seldomer by sup∣puration, by reason of the small quantity of heat in that humor.