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Nodular lesions in renal tuberculosis

K Mizunuma1, K Toyoda, S Tada

  • 1Department of Radiology, Jikei University School of Medicine, Japan.

Radiation Medicine
|November 1, 1994
PubMed
Summary

Computed tomography (CT) reveals characteristic nodular lesions in renal tuberculosis. These lesions evolve over time, reflecting water absorption from caseous material, aiding diagnosis.

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Area of Science:

  • Radiology
  • Infectious Diseases
  • Nephrology

Background:

  • Renal tuberculosis (TB) is a significant extrapulmonary manifestation of Mycobacterium tuberculosis infection.
  • Accurate imaging is crucial for diagnosing and managing renal TB.

Purpose of the Study:

  • To characterize the computed tomography (CT) findings of renal tuberculosis.
  • To correlate CT features with pathological changes and disease progression.

Main Methods:

  • Retrospective analysis of CT scans from 27 patients (32 kidneys) with confirmed renal tuberculosis.
  • Detailed evaluation of nodular lesions, including their density, location, and evolution over time.
  • Correlation with ultrasound findings where available.

Main Results:

  • Nodular lesions were identified in 20 out of 32 kidneys (62.5%).
  • Nodules exhibited varying densities on CT: low (3 kidneys), isodense (7 kidneys), and high (10 kidneys).
  • Follow-up imaging demonstrated a progression from low/isodense to high-density nodules with decreasing volume, suggesting water absorption from caseous material.

Conclusions:

  • Nodular lesions are a characteristic CT finding in renal tuberculosis.
  • CT density variations in nodules reflect the dynamic process of caseous material resolution.
  • CT imaging provides valuable insights into the pathological evolution of renal tuberculosis.

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