A study of clinical and histopathological correlation of lichen planus

Introduction: Lichenoid tissue reaction or interface dermatitis embraces several clinical conditions, the prototype of which is lichen planus and its variants. Others include drug induced lichenoid dermatitis, special forms of lichenoid dermatitis, lichenoid dermatitis in lupus erythematosus, and other disorders all of which have salient clinical and histological features. The aim of this study was to correlate the clinical features with histopathological findings in all clinically suspected cases of lichen planus and assess the clinical diagnostic accuracy. Materials and methods: This study had been carried out over a period of 2 years from July 2015 to June 2017 in the Department of Pathology, Gandhi Hospital. Histopathological sections of skin biopsies from 85 patients were studied after routine H and E staining and morphological changes were noted. The patients’ clinical findings were then correlated with the histological changes. The results were then analysed. Results: Total numbers of biopsies inclusive of LP and LP like lesions were 85. Among them, the number of patients having LP was 50. The age ranged from 18 to 65 years (mean 37.1 years). The mean duration of the lesion was 12.02 months (approx 1 year). Males were affected more than females. Out of the 85 cases, 50 were Lichen planus and 35 were lichenoid eruptions. Of the Lichen planus, 31 (61.6%) cases were of classical lichen planus, 6 (13.3%) cases were of hypertrophic lichen planus, 4 (8.3%) cases were of lichen planus pigmentosus, 4 (6.6%) cases were of actinic lichen planus, 3 (5%) cases were of eruptive lichen planus, 1 (1.6%) case each of atrophic lichen planus, annular lichen planus. N. Srivani, B.V.N. Sravani, Shyamala Srujana, O. Shravan Kumar. A study of clinical and histopathological correlation of lichen planus. IAIM, 2017; 4(9): 136-144. Page 137 Conclusion: In the present study, maximum number of cases occurred in age group of 18-28 years. Though pruritis is a common symptom, it is nonspecific. Therefore, histopathology remains the most important diagnostic tool for proper evaluation of Lichenoid eruptions/ Lichen planus.

Dermatosis liquenoide anular juvenil (ALDY) / Annular lichenoid dermatosis juvenile (ALDY)

La dermatosis liquenoide anular juvenil (ALDY, por sus siglas en inglés) es una entidad clínico-patológica benigna, descripta en niños y jóvenes. Se presenta clínicamente como una dermatitis liquenoide distintiva y posee, además, una histopatología particular. Las lesiones se ubican predominantemente en los flancos e ingles, y en la mayor parte de los casos, tras la suspensión del tratamiento, se produce una recaída...

ALDY is a benign clinico-pathologic entity, described in children and young patients. It is a clinically particular form of lichenoid dermatitis and has a specific histopathology. The lesions are mostly distributed on the groin and flanks. After treatment withdrawal the patients relapsed...

Interface dermatitis.

Interface dermatitis includes diseases in which the primary pathology involves the dermo-epidermal junction. The salient histological findings include basal cell vacuolization, apoptotic keratinocytes (colloid or Civatte bodies), and obscuring of the dermo-epidermal junction by inflammatory cells. Secondary changes of the epidermis and papillary dermis along with type, distribution and density of inflammatory cells are used for the differential diagnoses of the various diseases that exhibit interface changes. Lupus erythematosus, dermatomyositis, lichen planus, graft versus host disease, erythema multiforme, fixed drug eruptions, lichen striatus, and pityriasis lichenoides are considered major interface diseases. Several other diseases (inflammatory, infective, and neoplastic) may show interface changes.

A Case of Pigmented Purpuric Lichenoid Dermatitis of Gougerot-Blum Treated by Pentoxifylline / 대한피부과학회지

The pigmented purpuric lichenoid dermatitis of Gougerot-Blum is a subtype of the pigmented purpuric dermatoses characterized by small red-brown lichenoid papules that coalesce to form plaque lesions. This disorder usually persists for months to years and is resistant to conventional therapy. Pentoxifylline has been used to treat various dermatologic diseases, but its effectiveness in pigmented purpuric lichenoid dermatitis has not been reported. We tried oral pentoxifylline treatment, 400mg twice a day on a 63-year-old man with pigmented purpuric lichenoid dermatitis. A response was observed within 2 weeks. And after 8weeks, the skin lesion showed much improvement and therapy was discontinned. Four month later, he had a recurrence on the leg. He was treated again with pentoxifylline and after 3 weeks, the recurrent lesion showed resolution.

A Case of Pigmented Purpuric Lichenoid Dermatitis of Gougerot-Blum / 대한피부과학회지

Pigmented purpuric lichenoid dermatitis of Gougerot-Blum is one of the diseases classified under the group name of pigmented purpuric dermatoses that are likely variants of each other resulting from lymphocyte-mediated leakage of erythrocytes. This is characterized by minute, rust-colored, lichenoid papules that tend to fuse into plaques with indistinct borders and develop mainly on the legs, thighs, and lower trunk. We report a case of pigmented purpuric lichenoid dermatitis of Gougerot-Blum on the lower abdomen, buttocks, and lower legs in a 69-year-old male patient.