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Chapter-04 Lichenoid and Interface Dermatitis

BOOK TITLE: IADVL Color Atlas of Dermatopathology

Author
1. Khopkar Uday
2. Mysore Venkataram
3. Chandra Mithilesh
4. Dongre Atul M
5. Desai Chirag
6. Mahajan Pradeep
7. Pokharel Achyut
ISBN
9789385891236
DOI
10.5005/jp/books/12981_5
Edition
1/e
Publishing Year
2017
Pages
28
Author Affiliations
1. KEM Hospital and Seth GS Medical, College, Mumbai, Maharashtra, India, KEM Hospital and Seth GS Medical College Mumbai, Seth GS Medical College and KEM Hospital, Mumbai, Maharashtra, India, e-mail: drkhopkar@gmail.com, Seth GS Medical College and KEM Hospital, Mumbai, Maharashtra, India, drkhopkar@gmail.com, Seth GS Medical College and KEM Hospital, Mumbai, Maharashtra, India, KEM Hospital and SGS Medical College, Mumbai, Maharashtra, India, Seth GS Medical College and King Edward Memorial Hospital, Mumbai, India
2. (Accredited to Rajeev Gandhi University of Health Sciences, Bengaluru), Bengaluru, Karnataka, India, Venkat Center for Skin and Plastic Surgery, Bengaluru, Karnataka, India, Venkat Charmalaya-centre for Advanced, Dermatology and Postgraduate Training City, Bengaluru, Karnataka, India
3. B-6 Sector 27 Noida, UP, India, Pathology consultancy services, Noida, Uttar Pradesh, India
4. Seth GS Medical College and KEM Hospital, Parel, Mumbai, Maharashtra, India, King Edward Memorial (KEM) Hospital and Seth Gordhandas Sunderdas Medical College (GSMC) Mumbai, Maharashtra, India
5. Hindu Sabha Hospital, Ghatkopar, Mumbai, Maharashtra, India, Divya Sparsh Skin and Hair Clinic, Mumbai, Maharashtra, India
6. Dr Mahajan’s Dermatology and Dermatopathology Services, Pune, Maharashtra, India
7. Chitwan Medical College, Bharatpur, Nepal
Chapter keywords
Lichenoid dermatitis, interface dermatitis, lichen planus, mucous membrane, graft-versus-host disease, lupus erythematosus, systemic lupus erythematosus, dermatomyositis, lichenoid reaction

Abstract

This chapter focuses on lichenoid and interface dermatitis and covers figures of lichenoid tissue reaction and interface dermatitis. Lichenoid dermatitis refers to band like infiltrate in the upper dermis obscuring dermoepidermal junction (lichen planus) and interface dermatitis refers to the presence of basal cell vacuolation and apoptosis. Older lesions of lichen planus will have minimal inflammation with many melanophages and dilated capillaries in dermis. Early pointer to acute graft-versus-host disease (GVHD) is involvement of follicular epithelium with basal cell vacuolation. The infiltrate in lichen planopilaris does not extend around blood vessels of the mid and deep plexus like lupus erythematosus (LE). Prominent basal cell vacuolation and presence of mucin are helpful in distinguishing systemic lupus erythematosus (SLE) from polymorphic light eruption. Lichenoid reaction with spongiotic changes are seen in drug reactions, lichenoid contact dermatitis, lichen striatus. Lichenoid reaction with parakeratosis is a feature of pityriasis lichenoides, lichenoid drug eruptions, lichen striatus, lichen planus-like keratosis, lichen nitidus.

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