This study aims at evaluating the histopathological spectrum of skin lesions and to analyze the clinicopathological correlation in various categories of skin lesions.
Material and MethodsThis cross-sectional study was conducted in the Department of Pathology with clearance from the Institutional Ethics Committee during a time period of 10 years from January 2008 to April 2018. During this period, 800 skin biopsies received from the Department of Dermatology, Venereology and Leprology were studied and analyzed. The identities of patients were double-blinded to avoid bias. The blocks/slides were alphabetically coded and
Background and objectives: Granulomatous dermatoses are the most frequently encountered dermatological disorders in tropical countries with leprosy and tuberculosis as the leading causes. Although granulomatous skin lesions are very prevalent in society today, dermatopathologists often face diagnostic challenges while reporting these lesions due to the similar histopathological features or tissue reaction patterns seen in these lesions with diverse etiologies. The purpose of this study is to review the various causes and patterns of granulomatous skin lesions and a sequential approach to diagnosis of individual lesions accurately. Materials and methods: A comprehensive search of all literature available on granulomatous skin diseases between 2000 and 2018 was conducted, using keywords such as "granulomatous dermatosis, " "cutaneous tuberculosis, " "leprosy, " and "histopathological study" in the databases such as PubMed, ProQuest, and Google Scholar. The articles that satisfied the criteria were included in the final review. Results: The available evidence from the existing systematic literature reviews and articles suggested that the various tissue reaction patterns observed in granulomatous skin lesions are classified as epithelioid, palisaded, suppurative, xanthogranulomatous, foreign body, and other granulomatous patterns. These tissue reaction patterns are caused by infections, foreign bodies, metabolites, chemicals, and malignancies. Conclusion: Granulomatous dermatoses are a heterogeneous group of skin disorders that are frequently encountered in diagnostic dermatopathology. The histomorphology of a granuloma has to be correlated with the clinical history and ancillary techniques including special stains, culture, and molecular methods are necessary to arrive at a definitive diagnosis.
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