Pilonidal Sinus

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Abstract
SINCE the first case was reported in 18471 a voluminous literature on the origin and treatment of pilonidal sinus has accumulated. Although some of the earlier authors regarded the condition as acquired2 , 3 the consensus has been that it is congenital. The two prevalent theories are that pilonidal sinuses represent remnants of the neural canal4 5 6 7 8 and that they are due to an ectodermal inclusion resulting from malfusion of the two halves of the body.9 10 11 The proponents of both theories demonstrate a space or canal lying between the coccyx and the skin, which is constant in small embryos6 and variable in fetuses, . . .

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