Therefore, a diagnosis of papulonecrotic
tuberculid of thigh lesion was made on the basis of all the clinical, pathological, and laboratory examinations.
In the present study, lupus vulgaris was the most common variant of cutaneous TB followed by tuberculosis verrucosa cutis, scrofuloderma and papulonecrotic tuberculids (Table 3).
None of the cases of papulonecrotic tuberculids showed caseous necrosis.
Miscellaneous group included four cases of papulonecrotic
tuberculide, two cases each of lichen sclerosus et atrophicus, herpes zoster and bullous pemphigoid, and one case each of trauma during sexual activity, Behcet disease, circinate balanitis, pemphigus vulgaris and Stevens-Johnson syndrome.
There are four major categories of cutaneous tuberculosis: (1) inoculation from an exogenous source (primary inoculation tuberculosis, tuberculosis verrucosa cutis); (2) endogenous cutaneous spread contiguously or by auto-inoculation (scrofuloderma, tuberculosis cutis oroficialis); (3) hematogenous spread to the skin (lupus vulgaris, acute miliary tuberculosis, and tuberculosis ulcer, gumma, or abscess); (4) tuberculids (erythema induratum [Bazin's disease], papulonecrotic tuberculids, and lichen scrofulosorum).
The grayscale values ratio of LL-37, HBD-2, and HBD-3 in the lesions of papulonecrotic tuberculids (case 4) were 4.
Penile TB may present with strictures fistulae, ulcers or papulonecrotic
Conditions in this group include: papulonecrotic
tuberculid, LS, erythema induratum of Bazin, and erythema nodosum.
66% Total 16 14 30 100% Table 2: Duration wise distribution of cutaneous tuberculosis 1 TBVC 4 2 6 2 14 2 Lupus vulgaris 4 -- 6 -- 10 3 Scrofuloderma 2 -- 2 -- 4 4 Papulonecrotic
-- -- 2 -- 2 tuberculide Total 10 2 16 2 30 Percentage 33.