# Optimizing Care for Primary Glomerulonephritis: The Role of Thyroid Evaluation

## TL;DR

This study finds that patients with primary glomerulonephritis have higher rates of thyroid issues compared to healthy individuals, suggesting the need for routine thyroid checks in these patients.

## Contribution

The study is the first to investigate the prevalence of thyroid disorders in patients with primary glomerulonephritis using sonography and lab tests.

## Key findings

- 17.2% of patients with primary glomerulonephritis had subclinical hypothyroidism, and 8.6% had overt hypothyroidism.
- Thyroid abnormalities like hypoechogenicity and nodules were significantly more common in patients than in healthy controls.

## Abstract

The coexistence of primary glomerulonephritis and autoimmune thyroid disease has not been investigated.

This study aimed to assess thyroid morphology using sonography, determine the prevalence of autoimmune thyroid disorders, and evaluate thyroid function status in patients diagnosed with primary glomerulonephritis.

This single-center cross-sectional and observational study included 58 consecutive patients with primary glomerulonephritis and 58 healthy controls (HC). All participants underwent thyroid examination through laboratory tests and thyroid ultrasonography. The findings were subsequently compared between the two groups.

Among the patients, 17.2% (n = 10) exhibited subclinical hypothyroidism, while 8.6% (n = 5) had overt hypothyroidism. None of the HCs showed overt hypothyroidism, whereas 3.4% (n = 2) of them exhibited subclinical hypothyroidism. Patients displayed significantly lower free triiodothyronine (FT3) levels than HCs (p < 0.001). A linear correlation was observed between patients' thyroid-stimulating hormone (TSH) levels and the degree of proteinuria (p = 0.044). Furthermore, thyroid volume (p < 0.001), hypoechogenicity (p < 0.001), heterogeneous structure (p < 0.001), pseudonodular hypoechoic infiltration (p = 0.05), and the presence of nodules (p < 0.001) were notably higher in patients compared to HCs.

The prevalence of both overt and subclinical hypothyroidism, along with the frequency of nodular goiter, was found to be elevated in patients with primary glomerulonephritis. Considering that primary glomerulonephritis predominantly afflicts young individuals, and these patients bear the lifelong burden of chronic kidney disease, we underscore the significance of routine thyroid function tests and sonographic examinations for the early detection of thyroid disorders.