After intensive study of 121 patients from the State of Minas Gerais in Brazil, who were affected by late yaws, several conclusions were reached which are somewhat at variance with other opinions expressed in the literature and which appear worthy of publication in summarized form in English. The complete study appears in my monograph on the subject.1
The incidence of late cutaneous manifestations in my cases was the following: ulcerative lesions—80.9%; keratodermia palmaris et plantaris—25.6%; tuberous and nodular lesions—7.4%; gangosa—3.3%; no juxta-articular nodules were found. The tuberous, nodular, and ulcerative lesions in 95.1% of the cases were located on the lower limbs. A predilection for the left leg was observed, which may be explained by a special anatomical disposition causing a retardation in the venous circulation.
Late ulcerative lesions were morphologically of the following types: limited ulcerative lesions, serpiginous-ulcerative lesions, cicatricial-ulcerative
FURTADO TA. Late Manifestations of Yaws. AMA Arch Derm. 1957;76(4):446–451. doi:10.1001/archderm.1957.01550220054010
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