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Histo-functional status of kidney in leprosy
Abstract:
A study of 64 cases of leprosy (44 lepromatous and 20 nonlepromatous) revealed that the duration of the disease has a significant relationship with renal involvement (chi 2 = 16.9, P less than 0.001). Proteineuria, microscopic haematuria, granular and hyaline casts are mainly seen in lepromatous cases and specially with lepra reaction (100%) while few of the non-lepromatous (2%) cases may show these abnormalities. Impaired renal functions are mostly observed in lepromatous leprosy (62.9%) specially those with lepra reaction (100%) while 2% nonlepromatous cases have these impaired renal functions. Histo-pathological studies revealed non-specific changes in 44.4% of cases and those of chronic pyelonephritis in 15.5% of the cases. Renal amyloidosis is less common occurrence (4.4%). The specific lesion, that is 'leproma kidney', is rare and seen in one patient only. Acid fast bacilli could not be seen in any of the kidney tissue. It is therefore, concluded that the renal involvement in the form of inflammatory lesions and non-specific changes in the glomeruli and tubules are very common in lepromatous leprosy specially during the reactive phase.
Insights
Leprosy, particularly lepromatous leprosy, significantly impacts kidney health, especially during reactive phases. Early detection and management of renal complications are crucial for patients with leprosy.
Area of Science:
- Nephrology
- Infectious Diseases
- Pathology
Background:
- Leprosy is a chronic infectious disease with potential systemic complications.
- Renal involvement is a recognized but often understudied complication of leprosy.
Purpose of the Study:
- To investigate the prevalence and nature of renal involvement in leprosy patients.
- To determine the relationship between leprosy type, disease duration, and renal pathology.
Main Methods:
- Retrospective analysis of 64 leprosy cases (44 lepromatous, 20 nonlepromatous).
- Evaluation of clinical data, urinalysis, renal function tests, and histopathological findings.
- Statistical analysis to assess correlations between disease characteristics and renal parameters.
Main Results:
- Significant correlation found between disease duration and renal involvement (P < 0.001).
- Proteinuria, hematuria, and casts were common in lepromatous leprosy, especially during lepra reactions (100%).
- Impaired renal function observed in 62.9% of lepromatous cases, particularly those with reactions.
Conclusions:
- Renal involvement, including inflammatory lesions and non-specific glomerular/tubular changes, is highly prevalent in lepromatous leprosy.
- Lepra reactions significantly exacerbate renal complications in leprosy patients.
- While specific lesions like 'leproma kidney' are rare, non-specific renal changes are common and warrant attention.