This process is known as coagulation necrosis, and the resulting Fibroid mass, containing in its meshes the necrosed and degenerated epithelium and leucocytes, constitutes the diphtheritic or false membrane.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
They may be of a Fibroid nature and arise from the follicles of the hair as sebaceous tumors or may be in the form of an abscess.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
Muscular fixation may be due to rheumatic or syphilitic myositis, and this is sometimes followed by Fibroid degeneration of the muscles, rendering the fixation permanent.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition."
Alexander Miles Alexis Thomson