ICD-11 definition : Tertiary yaws develops in 10% of untreated infected individuals after and interval
of 5 years or more. The late stage skin lesions are characterised by gummatous nodules
with necrotic tissue destruction, followed by debilitating scarring and contracture.
Destructive osteitis can result in ulceration of the palate and nasopharynx ('gangosa'),
or bowing of the tibia (sabre shins). Hypertrophic periostitis at periarticular sites
can lead to exostosis of the paranasal maxillae ('goundou').;
Tertiary yaws develops in 10% of untreated infected individuals after and interval
of 5 years or more. The late stage skin lesions are characterised by gummatous nodules
with necrotic tissue destruction, followed by debilitating scarring and contracture.
Destructive osteitis can result in ulceration of the palate and nasopharynx ('gangosa'),
or bowing of the tibia (sabre shins). Hypertrophic periostitis at periarticular sites
can lead to exostosis of the paranasal maxillae ('goundou').
Automatic exact mappings (from CISMeF team)