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Imaging Studies III: Computed Tomography

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DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...

External Anatomy of the Kidney

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The kidneys are a pair of bean-shaped organs in the human body that play a critical role in maintaining overall health. They filter out waste products from the blood, regulate blood pressure, maintain electrolyte balance, and stimulate the production of red blood cells.
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Imaging Studies I: Kidney, Ureter, and Bladder Studies

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Kidney, Ureter, and Bladder (KUB) StudiesKidney, Ureter, and Bladder (KUB) studies are standard diagnostic imaging procedures used to assess the anatomy of the urinary system. They are commonly utilized for patients experiencing abdominal pain or urinary symptoms. By using a simple X-ray of the abdomen, KUB studies can reveal structural and pathological abnormalities within the kidneys, ureters, and bladder. These studies are particularly valuable in diagnosing kidney stones, urinary...

Imaging Studies V: Intravenous Urography and Retrograde Pyelography

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IntroductionIntravenous Urography (IVU) and Retrograde Pyelography (RP) are important diagnostic imaging techniques used to evaluate the urinary system. These methods help identify structural abnormalities, obstructions, and functional issues in the kidneys, ureters, and bladder. Both procedures use iodine-based contrast media to enhance the visibility of urinary tract structures on X-ray images, though they differ in their methods and indications.1. Intravenous Urography (IVU)Intravenous...

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Updated: Sep 13, 2025

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Intrathoracic Kidney Detected on DTPA Scan.

Meghana Prabhu¹, Abhishek Behera¹, Manav Suryavanshi²

¹Department of Nuclear Medicine, Amrita School of Medicine (Amrita Vishwa Vidyapeetham - Deemed University), Faridabad, Haryana, India.

Indian Journal of Nuclear Medicine : IJNM : the Official Journal of the Society of Nuclear Medicine, India

|July 30, 2025

Summary

This summary is machine-generated.

Intrathoracic kidney is a rare condition. Nuclear medicine imaging is crucial for diagnosing ectopic kidneys and assessing renal function, as demonstrated in this case of a 70-year-old male.

Keywords:

Diethylenetriaminepentaacetic acid scan ectopic kidney fluorodeoxyglucose positron emission tomography-computed tomography intrathoracic kidney single-photon emission computed tomography – computed tomography

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Published on: February 4, 2015

Area of Science:

Nephrology
Radiology
Nuclear Medicine

Background:

Intrathoracic kidney is an extremely rare form of renal ectopia.
Accurate localization and functional assessment of ectopic kidneys are critical for patient management.

Observation:

A 70-year-old male presented for presurgical evaluation of a right renal mass.
Initial ultrasonography misidentified the left kidney's location.
Nuclear medicine imaging revealed an intrathoracic left kidney and a right renal mass.

Findings:

^99mTc-DTPA renal scan with SPECT-CT confirmed impaired global glomerular filtration rate and ectopic left kidney.
FDG-PET-CT identified a soft tissue mass replacing the right kidney with lung metastases.

Implications:

This case highlights the diagnostic utility of nuclear medicine, including ^99mTc-DTPA scans and PET-CT.
It underscores the importance of advanced imaging in identifying rare renal anomalies like intrathoracic kidneys.
Accurate diagnosis and staging are essential for effective treatment planning in complex renal masses.