1C1D.2 Tertiary yaws

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2026-01

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’).

synonyms

• Tertiary yaws
• Gummata or ulcers of yaws
• gummata and ulcers due to yaws
• gummata of yaws
• gummatous frambeside
• gummatous framboeside
• gummatous yaws
• nodular late yaws
• ulcerated nodular late yaws
• ulcerative gumma due to yaws
• ulcers of yaws
• yaws gumma
• yaws gummata and ulcers
• yaws ulcer
• Gangosa
• Rhinopharyngitis mutilans
• goundou
• goundou of yaws
• yaws goundou
• yaws gumma of nose
• Bone or joint lesions of yaws
• yaws of bone
• Yaws hydrarthrosis
• Hydrarthrosis of early yaws
• Hydrarthrosis of late yaws
• Yaws osteitis
• osteitis of yaws
• Early or late osteitis of yaws
• Gummatous osteitis of yaws
• Yaws periostitis
• periostitis of yaws
• Early or late hypertrophic periostitis of yaws
• hypertrophic periostitis of yaws
• Early periostitis of yaws
• Early hypertrophic periostitis of yaws
• Hypertrophic periostitis of late yaws
• Periostitis of late yaws
• Gummatous periostitis of yaws
• Ganglion of yaws
• yaws ganglion
• Early or late ganglion of yaws
• Henpue
• Gumma of bone of late yaws
• yaws gumma of bone

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