Scientific Illustration

biomedicalephemera:

Gangraena humida pedis - wet gangrene of the foot

Though it can form from any occlusion of blood supply, this gangrenous foot has a particularly interesting origin. 

Following the forcible correction of a flexion contracture due to tuberculosis of the hip-joint, the toes became flexed, cold, and blue. Shortly thereafter, the toes blackened, and fistulae formed on the first and fifth toes, where necrotic bone began to protrude.

As the gangrenous tissue only formed on the end of the foot, it is obvious that there was no full occlusion or rupture of the femoral artery. The physician surmised that the pinched intima of the artery caused thrombosis of a vessel in the foot, and the tissue beyond that point died. 

This case only required the amputation of the anterior portion of the foot and recovered easily.

Iconograms: A Collection of Colored Plates Illustrating Interesting Surgical Conditions. Prof. Bockenheimer, 1913.

(via biomedicalephemera)

libertasacademica:

Figure 2 B from ‘Computational Characterization of Surface-Associated Binding Interaction of Alpha-Enolase of Trichomonas vaginalis with Human Plasminogen’ Published in Human Parasitic Diseases

biomedicalephemera:

Suicide by hanging, with an old rope wound five times about the neck.

The lack of cyanosis (blue skin - generally caused by lack of oxygen) and the marked ecchymoses from the rope lead the forensic pathologist to conclude that this man hanged himself, or was hanged while still alive.

For a prolonged period during the 1800s and early 1900s, strangulation and staging a hanging was a crime not unheard of, and a fairly popular tactic for disguising a murder. If the decedent was dead prior to hanging, the ecchymoses (ruptured blood vessels) would not have formed as they did, and if he was strangled manually, significant cyanosis would appear prior to death. Because there is a lack of cyanosis and a presence of imprints from the rope, one can conclude that he was alive when he was hanged. Though it does not completely rule out murder, this conclusion would likely lead to a finding of “suicide” on the death certificate, barring suspicion of forced hanging.

Atlas of Legal Medicine. Dr. Eduard von Hofmann, 1898.

biomedicalephemera:

Bacteriologic Chart

1. Gonococcus spp.
2. Pneumococcus spp.
3. Streptococcus pyogenes
4. Micobacterium tuberculosis
5. Vibrio cholerae
6. Corynebacterium diphtheriae
7. Bacterium typhosum
8. Bacterium dysenteriae
9. Achorion Schonleinii [favus fungus]
10. Bacillus anthracis
11. Bacillus aerogenes capsulatus
12. Yeast cells - With buds and ascospores depicted

Deadly diseases are almost pretty, when stained and smeared on a microscope slide…

Postmortem Pathology. Henry W. Cattell, 1906.

(via theyreadbooks)

ojimbo:

Ball Collection, Acc #18905 by otisarchives1 on Flickr.

moshita:

New Sydenham Society’s atlas of pathological illustrations, 1898 Sir Robert Carswell

Pathological Anatomy

ojimbo:

Ball Collection, Acc #19338 by otisarchives1 on Flickr.

ojimbo:

Ball Collection, Acc #18893 by otisarchives1 on Flickr.