==== Front Indian J Sex Transm Dis AIDSIndian J Sex Transm Dis AIDSIJSTDIndian Journal of Sexually Transmitted Diseases and AIDS2589-05572589-0565Medknow Publications & Media Pvt Ltd India IJSTD-38-19410.4103/ijstd.IJSTD_84_17Photo QuizPerigenital warty lesions-what is your diagnosis? Menon Devi Sathianadha Marfatia Yogesh S. Department of Skin and VD, Medical College Baroda and SSG Hospital, Vadodara, Gujarat, IndiaAddress for correspondence: Dr. Devi Sathianadha Menon, Department of Skin and VD, Medical College Baroda and SSG Hospital, Vadodara - 390 001, Gujarat, India. E-mail: devs.rulz89@gmail.comJul-Dec 2017 38 2 194 196 Copyright: © 2017 Indian Journal of Sexually Transmitted Diseases and AIDS2017This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms.Perigenital warty lesions can be of diverse origin. An attempt should be made to rule out sexually transmitted disease (STD). If the diagnosis is not settled, biopsy may clinch the diagnosis. Key words Perigenitalwartylesions ==== Body INTRODUCTION Perigenital warty lesions can be of diverse origin. An attempt should be made to rule out sexually transmitted disease (STD). If the diagnosis is not settled, biopsy may clinch the diagnosis. PRESENT CASE A 36-year-old married male patient presented to dermatology outpatient department with complaints of multiple skin lesion over inguinal region for 1 year. He had associated itching which was moderate in severity, with no diurnal variation. There was no history of extra marital sexual exposure. He had consulted various family physicians for the same, with no response. Cutaneous examination revealed multiple hyperpigmented hyperkeratotic plaques over the lower abdomen, inner thighs, and scrotum Figures 1–3. Nail, hair, and oral mucosa were normal. Regional lymph nodes were not palpable, and the rest of the systemic examination was normal. Peri anal region was insignificant. Differential diagnosis was considered as genital molluscum contagiosum, genital warts, and keratoacanthoma. Figure 1 Cutaneous examination-hyperpigmented hyperkeratotic plaques over lower abdomen, inner thighs and scrotum Figure 2 Hyperkeratotic plaques over inner thigh Figure 3 Hyperkeratotic plaques over inner thigh Investigations Serum venereal disease research laboratory and serum HIV were negative. Complete blood count and urine routine were within normal limits. Punch Biopsy was taken and sent for Histopathological examination. What is your diagnosis? HPE revealed moderately dense superficial perivascular lymphocytic infiltrate along with irregular epidermal hyperplasia which obscures the dermoepidermal junction. The dermoepidermal junction at those spots shows occasional colloid bodies. Figures 4 and 5 shows wedge-shaped hypergranulosis seen within hyperplastic appendages. Figure 4 Histopathology showing perivascular lymphocytic infiltrate Figure 5 Histopathology showing wedge shaped hypergranulosis FINAL DIAGNOSIS-HYPERTROPHIC LICHEN PLANUS Treatment given In this case, intralesional steroid (triamcinolone 10 mg/ml) fornightly along with cryotherapy have been used to treat the patient with improvement [Figures 6 and 7]. Patient responsed well after 4 weeks. Figure 6 Posttreatment-4 weeks follow up Figure 7 Posttreatment -6 weeks follow up DISCUSSION In the case discussed, predominantly warty lesions were suggestive of venereal warts, but there was no history of exposure, no other marker of STD and serology for HIV and syphilis were nonreactive. Non-venereal conditions considered were keratoacanthosis and seborrheic keratosis. Surprisingly biopsy suggested hypertrophic lichen planus (HLP) Lichen planus (LP) is an inflammatory, papulosquamous disorder affecting either or all of the skin, mucous membranes, hair, and nail.[1] HLP is a subacute or chronic variant of lichen planus, better known as lichen planus hypertrophicus (LPH), characterized by hypertrophic or warty lesions, most often found on the pretibial area of the lower limbs.[2] There is a dearth of a report on the occurrence of hypertrophic lesions over scrotum and inguinal region. Neoplastic transformation in cutaneous LP is very rare, although the incidence of cancer in oral LP is about 1.3%.[3] The underlying mechanism of this malignant conversion is not exactly known, but speculatively, chronic inflammatory processes show an overdrive of growth factors that constantly stimulate epithelial cell proliferation into neoplastic conditions.[45] An average time of 12 years may lapse between the diagnosis of hypertrophic LP and the onset of squamous cell carcinoma (SCC), prompting regular follow up of HLP cases for long period is essential. There should be no reservation for biopsy. The majority of reported neoplasms have been histologically well-differentiated SCCs. Two cases of keratoacanthoma, both occurring on the lower legs in association with HLP have been reported.[4] Histopathology of hypertrophic LP shows pseudoepitheliomatous hyperplasia with hyperkeratosis and irregular acanthosis. The interface infiltrate is less band-like. Cystic dilatation of hair follicles. In long-standing cases, vertical streaking of collagen bundles similar to lichen simplex chronicus and dermal fibrosis is seen. Potent corticosteroid ointments (e.g., fluocinonide 0.05% and clobetasol propionate, 0.05%) are the main-stay of therapy for localized lesions of LP. In hypertrophic and palmoplantar lesions, these can be administered under occlusion. Intralesional injection of a long-acting steroid (triamcinolone acetonide, 40 mg/ml) once in 3–4 weeks is effective in hypertrophic LP. Calcineurin inhibitors such as cyclosporine, tacrolimus, and pimecrolimus have been used to treat LP LP runs a chronic course, over months to several years. Relapse occurs in 15%–20% of cases. Learning points In case of genital and inguinal warty lesions, both sexually acquired and nonsexually acquired causes should be ruled out Biopsy may rule the roost like in present case Intralesional corticosteroid can give gratifying result and can be considered as first line therapy There is potential for malignant transformation which is very slow Such cases should be followed for long term to detect malignant transformation at an early stage. Financial support and sponsorship Nil. Conflicts of interest There are no conflicts of interest. ==== Refs REFERENCES 1 Sengupta S Das JK Gangopadhyay A Malignant transformation of hypertrophic lichen planus Indian J Dermatol Venereol Leprol 2006 72 470 2 Sigurgeirsson B Lindelöf B Lichen planus and malignancy. An epidemiologic study of 2071 patients and a review of the literature Arch Dermatol 1991 127 1684 8 1952973 3 Katz RW Brahim JS Travis WD Oral squamous cell carcinoma arising in a patient with long-standing lichen planus. A case report Oral Surg Oral Med Oral Pathol 1990 70 282 5 2216354 4 Bhat RM Chathra N Dandekeri S Devaraju S Verrucous growth arising over hypertrophic lichen planus Indian J Dermatol Venereol Leprol 2013 79 711 3 23974592 5 George R Jacob M Valia RG Valia AR Lichen planus IADVL Textbook and Atlas of Dermatology 2001 2nd ed Mumbai Bhalani Publishing House 143 4