De venis mesaraicis obstructis ipsarumque ita affectarum curatione Theses sive Pronunciata LX

XXXII.
Finally, a cause not to be neglected—the sine qua non without which it cannot be—is the fitness of the instrument itself: the narrowness of the mesenteric veins, whether natural or acquired—that is, whether they proceed from external causes.

XXXIII.
The pathognomonic signs of mesenteric obstruction are these: if, whether through vomiting or bowel movement, a white, chyle-like juice, similar to cream, is discharged, since it was not absorbed by the mesenteric vessels and is thus evacuated.

XXXIV.
For if evacuations occur above and below solely from the weakness of the stomach and intestines, then what is ingested is excreted either not at all, or only slightly altered. Furthermore, we see that when the liver is weakened or obstructed, a flux occurs, but it is imbued with a slight redness, as if with a tincture of blood. In the same way, this also happens in cases of plethora and mesenteric ulcers, which produce stools tinged with blood, bile, melancholic juice, or a certain pus, rather than chyle. Unless this occurs when the intestines are overly lubricated, it demonstrates the presence of an obstruction as if pointing a finger at it.

XXXV.
But if it happens that the belly becomes hard and is raised into a tumor, and the feet swell, and sometimes viscous humors are thrown off by vomiting, it provides an infallible suspicion of obstruction, especially if labored respiration also accompanies it.