Extraordinary enlargements of the hemolymph or hemal nodes are extremely rare. These structures, normally present in the human body, almost always of minute size, are usually overlooked in the postmortem examination. Comparatively few references are found in the literature calling attention to these most interesting tissues. They were first described by Lydig in mammals, i. e., in the hog and sheep, in 1857, and by H. Gibbs in the human being in 1884. The results of systematic examination for these bodies in the human being were first described by Warthin1 in 1901, and Meyer2 made an elaborate study of these bodies in the sheep in 1908. In the article by Warthin passing mention of hemolymph nodes is made by pathologists of note who regarded them as of no great significance.
The discoverers of these structures named them hemolymph nodes because of their appearance and microscopic structure. Warthin, however, apparently considers
LEDERER M. ENLARGEMENT OF HEMAL NODES. Arch Intern Med (Chic). 1923;31(3):364-372. doi:10.1001/archinte.1923.00110150063004