459solitary finding, with no association with neurological and ophthalmological disease and the latter may be assoeiated with mental retardation, epilepsy and other brain or ophthalmologic abnormalities (1-4). Secondary CVG may appear at any age, skin folds are usually asymmetric and histology reveals various alterations depending on underlying causes such as tumours, nctirofibromas, cerebriform intradermal nevi and inflammatory conditions. Systetnic disorders associated with seeondary CVG include acromegaly, myxedema, amyloidosis or pachydertnoperiostosis (1^).The diagnosis of CVG can be made clinically, but the length and styling of hair makes it difficult to detect the characteristic features of CVG. A few reports of CVG used computed tomography or MRl as a diagnostic method, however, it is difficult to reveal the entire pattern ofthe scalp lesions by these methods (5-7). We found 3D MRl ofthe head could show the characteristic furrows and ridges of CVG more obviously.
Lupus vulgaris is a progressive form of cutaneous tuberculosis occurring in a person with a moderate to high degree of immunity. It is the most common type of cutaneous tuberculosis. Lupus vulgaris can be mimicked by several other skin conditions, and a 69-y-old female is described with an extremely long history of extensive infiltrative skin lesions with abundant scaling. The lesions were localized on the right arm and forearm, and on the right lateral surface of the chest. The diascopic test was positive. Moreover, a large atrophic scar was seen in the region of right cubital fossa resulting in contracture of the right elbow joint. The histopathology strongly suggested the diagnosis of tuberculosis. The final diagnosis of tuberculosis was confirmed by PCR examination. A polychemotherapeutic regimen (ethambutol 1250 mg/d, rifampicin 600 mg/d and isoniazid 300 mg/d) was successfully employed for the treatment of skin lesions.
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