| ORIGINAL ARTICLE |
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| Year : 2022 | Volume
: 16
| Issue : 2 | Page : 38-43 |
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A retrospective study of skin biopsies of 184 cutaneous lichen planus patients
Hari Shivaram Pathave, Vivek Nikam, Atul Dongre, Uday Khopkar
Department of Dermatology, Seth G S Medical College and KEM Hospital, Mumbai, Maharashtra, India
Correspondence Address:
Dr. Hari Shivaram Pathave
Department of Dermatology, KJ Somaiya Medical College, Mumbai 400022, Maharashtra
India
 Source of Support: None, Conflict of Interest: None
DOI: 10.4103/tjd.tjd_116_21
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Background: Lichen planus (LP) is a chronic inflammatory and immune-mediated disease characterized by multiple clinical presentations. There are very few studies analyzing histopathological features of LP worldwide. Objectives: The aim of this work was to study different histopathological patterns in skin biopsies of LP and to correlate the clinical and histopathological features. Materials and Methods: Records of 184 biopsies diagnosed as LP were included in the study. Clinical data from the records reviewed. Hematoxylin and eosin-stained sections were retrieved, re-examined, and histopathological parameters were noted. Results: Among the 184 biopsies of LP patients, pigment incontinence (93.5%) was the most common followed by hypergranulosis (88%) and interface dermatitis (82.6%). In epidermal changes, saw-toothed acanthosis (90, 48.9%) was the most common followed by the flattened epidermis (47, 25.5%), irregular moderate acanthosis with appendageal involvement (31, 16.9%), and pseudocarcinomatous hyperplasia (16, 8.7%). In tissue reaction patterns, the lichenoid pattern was the most common (131, 71.2%) followed by mild superficial perivascular dermatitis (MSPVD) in 20 (10.9%) followed by various combination patterns. The types of hypergranulosis seen were wedge-shaped (86, 53.1%) followed by infundibular (32, 19.8%), regular (30, 18.5%), and acrosyringeal (14, 8.6%). Changes of venous stasis were observed in 41% of lower limb biopsies. Conclusion: On histopathology, pigment incontinence and hypergranulosis were the most consistent features in all types of LP. Awareness about the less frequent patterns may improve the diagnostic accuracy of clinicopathologic correlation. |
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