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Clinico histopathological correlation in leprosy
K N Shivaswamy1, A L Shyamprasad, T K Sumathy
1M S Ramaiah Medical Teaching Hospital Bangalore, Karnataka, India.
Introduction:
Leprosy is a chronic infectious disease caused by M. leprae, which presents in different clinico-pathological forms, depending upon the immune status of the host. Clinical classification gives recognition only to gross appearances of the lesions, whereas the parameters used for the histopathological classification are well defined, precise, and also take into account the immunological features.
Results:
Of the 182 suspected cases of leprosy which were biopsied, the clinical diagnosis was TT in 32 (17.5%), BT in 70 (38.4%), BB in 5(2.7%), BL in 24 (13.1%), LL in 23 (12.6%), and indeterminate in 28 (15.3%) cases. Of the 182 cases, which were biopsied, only 136 (74.7%) showed histological features consistent with any one type of leprosy. The overall clinicohistological correlation was 74.7 percent. A comparison of the histopathological pattern with that of clinical pattern revealed that the maximum correlation was seen with LL (84.2%), followed by BL (73.3%), BT (64.1%), TT (56%), BB, and IL (50%).
Conclusion:
Because there is some degree of overlap in different types of leprosy, especially the unstable forms, the correlation can be made more accurate by combining clinical and histopathological features.
Insights
Clinical and histopathological classifications of leprosy show moderate correlation. Combining both methods improves diagnostic accuracy, especially for unstable leprosy forms, aiding better patient management.
Area of Science:
- Dermatology
- Infectious Diseases
- Immunology
Background:
- Leprosy is a chronic infectious disease caused by Mycobacterium leprae.
- Disease presentation varies based on host immune status, leading to diverse clinico-pathological forms.
- Clinical classification relies on lesion appearance, while histopathology offers precise, immunologically informed parameters.
Purpose of the Study:
- To evaluate the clinicopathological correlation in leprosy diagnosis.
- To assess the accuracy of histopathological classification against clinical diagnosis.
Main Methods:
- Biopsy and histopathological examination of 182 suspected leprosy cases.
- Comparison of clinical diagnoses with histopathological findings.
- Calculation of overall clinicohistological correlation and correlation for individual leprosy types.
Main Results:
- Histopathological features consistent with leprosy were found in 136 out of 182 biopsied cases (74.7%).
- Overall clinicohistological correlation was 74.7%.
- Highest correlation was observed in the LL (84.2%) and BL (73.3%) types, with lower correlations in TT (56%) and indeterminate leprosy (50%).
Conclusions:
- There is a degree of overlap in leprosy classifications, particularly in unstable forms.
- Combining clinical and histopathological features enhances diagnostic accuracy for leprosy.
- Improved diagnostic accuracy facilitates better patient management and treatment strategies.
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