Medical Terminology Daily (MTD) is a blog sponsored by Clinical Anatomy Associates, Inc. as a service to the medical community. We post anatomical, medical or surgical terms, their meaning and usage, as well as biographical notes on anatomists, surgeons, and researchers through the ages. Be warned that some of the images used depict human anatomical specimens.

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A Moment in History

Georg Eduard Von Rindfleisch

Georg Eduard Von Rindfleisch
(1836 – 1908)

German pathologist and histologist of Bavarian nobility ancestry. Rindfleisch studied medicine in Würzburg, Berlin, and Heidelberg, earning his MD in 1859 with the thesis “De Vasorum Genesi” (on the generation of vessels) under the tutelage of Rudolf Virchow (1821 - 1902). He then continued as a assistant to Virchow in a newly founded institute in Berlin. He then moved to Breslau in 1861 as an assistant to Rudolf Heidenhain (1834–1897), becoming a professor of pathological anatomy. In 1865 he became full professor in Bonn and in 1874 in Würzburg, where a new pathological institute was built according to his design (completed in 1878), where he worked until his retirement in 1906.

He was the first to describe the inflammatory background of multiple sclerosis in 1863, when he noted that demyelinated lesions have in their center small vessels that are surrounded by a leukocyte inflammatory infiltrate.

After extensive investigations, he suspected an infectious origin of tuberculosis - even before Robert Koch's detection of the tuberculosis bacillus in 1892. Rindfleisch 's special achievement is the description of the morphologically conspicuous macrophages in typhoid inflammation. His distinction between myocardial infarction and myocarditis in 1890 is also of lasting importance.

Associated eponyms

"Rindfleisch's folds": Usually a single semilunar fold of the serous surface of the pericardium around the origin of the aorta. Also known as the plica semilunaris aortæ.

"Rindfleisch's cells": Historical (and obsolete) name for eosinophilic leukocytes.

Personal note: G. Rindfleisch’s book “Traité D' Histologie Pathologique” 2nd edition (1873) is now part of my library. This book was translated from German to French by Dr. Frédéric Gross (1844-1927) , Associate Professor of the Medicine Faculty in Nancy, France. The book is dedicated to Dr. Theodore Billroth (1829-1894), an important surgeon whose pioneering work on subtotal gastrectomies paved the way for today’s robotic bariatric surgery. Dr. Miranda.

Sources:
1. "Stedmans Medical Eponyms" Forbis, P.; Bartolucci, SL; 1998 Williams and Wilkins
2. "Rindfleisch, Georg Eduard von (bayerischer Adel?)" Deutsche Biographie
3. "The pathology of multiple sclerosis and its evolution" Lassmann H. (1999)  Philos Trans R Soc Lond B Biol Sci. 354 (1390): 1635–40.
4. “Traité D' Histologie Pathologique” G.E.
Rindfleisch 2nd Ed (1873) Ballieres et Fils. Paris, Translated by F Gross


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Valve of the inferior vena cava

Eustachian valve
Click for a larger image

The [valve of the inferior vena cava] is probably better known by its eponym, the [Eustachian valve]. This is an incomplete valve found at the most distal end of the inferior vena cava, at the point where it opens into the right atrium of the heart. The valve is muscular at its base and composed mostly by membranous endocardium, and is normally the only valve present in the inferior vena cava.

It appears as a membranous semilunar fold extending posteriorly from the limbus fossa ovalis, anterior to the inferior caval orifice where it disappears. Its free border is usually membranous, concave, and directed anterosuperiorly. Its  base is a transverse muscular ridge continuous with the anterior margin of the caval orifice.

It has no function in the adult, but in the fetus it helps to divert the flow of blood coming from the inferior vena cava towards the foramen ovale [fossa ovalis], as part of fetal circulation.

It has great anatomical variation in size, shape and thickness. On its medial aspect it joins with the Thebesian valve at the orifice of the coronary sinus.

First described by Bartolomeo Eustachius (c1500 - 1574) in 1653, the existence of the valve of the inferior vena cava was disputed by many until Winslow in 1717 confirmed its presence and suggested its function in fetal circulation.

Sources:
1. "The Valve of the Inferior Vena Cava" Hickie, JB Br Heart J. 1956 Jul; 18(3): 320–326
2. "Bartolommeo Eustachio; a great medical genius whose masterpiece remained hidden for 150 years" Wells, WA Arch Otolaring (1925) 48: 58