Related Experiment Video
Updated: Sep 15, 2025

In Vivo, Percutaneous, Needle Based, Optical Coherence Tomography of Renal Masses
Published on: March 30, 2015
A Novel Nomogram to Differentiate Between Renal Tuberculosis and Nontuberculous Renal Infection
1Department of Urology, Hangzhou Red Cross Hospital, Hangzhou, People's Republic of China.
Background:
To build a diagnostic nomogram for differentiating between renal tuberculosis (RTB) and nontuberculous renal infection.
Methods:
Eligible patients were randomly categorized into derivation and validation cohorts (7:3). Univariate and multivariate regression analyses were conducted to filter variables and select predictors. Multivariate logistic regression was employed for model construction and nomogram were used for visualization. The nomogram was evaluated by Concordance index (C-index), calibration curves and decision curve analysis (DCA).
Results:
Overall, 194 patients were included. The derivation and validation cohorts included 75 and 61 patients and 32 and 26 patients with RTB and nontuberculous renal infection, respectively. We included previous TB history, CRP levels, fever, chronic infection and hydronephrosis in the construction of the nomogram. A nomogram was developed and validated. This nomogram exhibited good discrimination and calibration. The C-indices of this nomogram in the derivation and validation cohorts was 0.99 and 0.98 (95% confidence intervals, 0.97-1.00 and 0.96-1.01), respectively. DCA revealed that the proposed nomogram was useful for the differentiation.
Conclusion:
The nomogram can differentiate between RTB and nontuberculous renal infection.
More Related Videos
Related Concept Videos
Pulmonary Tuberculosis IV
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
Pulmonary Tuberculosis III
The first classification is based on the development of the disease, and it includes the following categories:
Pulmonary Tuberculosis V
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the...
Determination of Renal Drug Clearance: Graphical and Midpoint Methods
The graphical method involves plotting the rate of drug excretion in urine against the plasma drug concentration. By analyzing the graph, the clearance can be calculated and obtained. Drugs rapidly excreted by the kidneys exhibit a...
Acute Pyelonephritis II: Diagnostic Studies and Management
Pulmonary Tuberculosis II
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...

