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Facial deformities in chronic yaws infection (rhinopharyngitis mutilans or gangosa)

The face of this 78-year-old man shows the ravages of chronic yaws, a nonvenereal endemic syphilis, caused by the spirochete Treponema pallidum, subspecies pertenue. The photograph shows degenerative changes to the cartilage and bones of the mid-face region, making it appear to have sunken inward, a facial deformity known as rhinopharyngitis mutilans or gangosa. This case of yaws was of 50 years duration. (Source: Photography by Dr. Peter Perine, Centers for Disease Control and Prevention, 1979. Public Health Image Library ID# 16932, Centers for Disease Control and Prevention, Atlanta, Georgia. Public domain.)

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