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  • Title: Clinico-histopathological correlation of skin and nerve in leprosy.
    Author: Khan A, Koranne RV, Bajaj P, Ravi B.
    Journal: J Dermatol; 2004 Aug; 31(8):632-6. PubMed ID: 15492436.
    Abstract:
    The histopathological features of skin tissue sections in patients clinically diagnosed as leprosy were correlated with the histopathological features of nerve specimens obtained from the same patients. Fifty untreated leprosy patients attending the Outpatient Department of the Department of Dermatology and Sexually Transmitted Diseases of Smt. Sucheta Kriplani and Kalawati Saran Children's Hospitals, New Delhi, India were included in the study. On correlating the histological features of skin and nerve tissue sections, concordant findings were found in 24 out of the 50 patients (48%) but discordance between the histopathological features of skin and nerve tissue sections were found in 26 out of 50 cases (52%). Of these 26 cases, the nerve tissue histology when compared with the skin histology showed features lower down the disease spectrum in 17 (34%) cases. Seven of the 50 patients (14%) showed histological features of leprosy higher in the disease spectrum in the nerve tissue sections than in the skin biopsy sections. One patient clinically LL leprosy demonstrated histopathological features of Histoid leprosy in the skin sections and LL in the nerve sections. The remaining one patient had features of TT leprosy in the skin tissue sections while the nerve tissue histopathology showed non-specific changes. Histological features of the skin tissue sections were consistent with the clinical diagnosis in 33 out of 50 cases (66%). When the clinical groups were correlated with the histological features of the nerve tissue sections, concordance was found in 30 of the 50 cases (60%). On comparison of the histological features of skin and nerve tissue sections with the clinical diagnosis, concordance was still lower i.e., 19 out of 50 cases (38%). Thus the histological features of the skin tissue sections correlated more frequently with the clinical diagnosis than did those of the nerve sections. The importance of neural histology lies in the fact that it shows a higher BI and a lower histological grading in some cases and if not performed the lapse can result in inadequate treatment, drug resistance and even relapse.
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