Affiliation:
1. Department of Dermatology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
2. Department of Radiodiagnosis and Imaging, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
Abstract
Introduction:
Hansen’s disease (HD) is a major public health problem in developing countries. It causes peripheral neuropathy, and if left untreated, it leads to deformities. It is important to diagnose such cases early, and prompt treatment should be given to patients to preserve nerve function.
Materials and Methods:
A total of 40 patients with HD who were already on multi-drug therapy (MDT) or treatment-naive were included in this study. These were clinically diagnosed cases of HD as per the Ridley–Jopling classification, and these patients were subjected to high-resolution ultrasonography (HRUS). A total of 19 controls were also included. The patients were clinically evaluated, and HRUS of bilateral ulnar nerves (UNs) was performed in all cases and controls. The other peripheral nerves, if clinically thickened, were evaluated using HRUS.
Results:
The cross-sectional area (CSA) of the UN in cases was significantly thickened as compared to controls. There was no difference in the CSA of patients on MDT as compared to treatment naïve patients. In two patients with pure neuritic HD, the clinical examination missed the bilateral nerve enlargement, and only unilateral nerve thickening was clinically appreciated. However, bilateral thickening was detected on HRUS.
Conclusion:
HRUS is a non-invasive and sensitive diagnostic tool that gives significant information on nerve structure and morphology. HRUS adds a new dimension to diagnosing HD, particularly the pure neuritic type, with the assessment of early nerve damage, which can prevent disabilities. HRUS is an objective diagnostic tool that can complement the clinical examination.
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