Clinical Question-9

A 65 years male presented with complain of

Flank pain with radiation towards the groin – 6 months which is progressively increasing in nature.

Episodes are Associated with Nausea and vomitting

Diabetes and Hypertension.

On Examination there is – Costovertebral angle tenderness

What is your most probable Diagnosis ?

A. Cholelithiasis 

B. Inguinal Hernia

C. Nephrolithiasis

D. Intestinal ischemia

Patient suspected to have Nephrolithiasis. Which is the standard imaging modality in the diagnosis of nephrolithiasis?

A. Ultrasonography

B. X-Ray KUB

C. Non-contrast enhanced computed tomography (CT) scan

D. Intravenous pyelograms

Stone removed from kidney and Image given below.

What is the most probable diagnosis?

Kidney stone 1

User:Михајло Анђелковић, CC BY-SA 3.0, via Wikimedia Commons

Urinary uric crystals seen under regular microscopy.

Scientific Figure on ResearchGate. Available from:

A. calcium oxalate

B. uric acid

C. cystine

D. struvite

What is the color of uric acid stones ?

Uric acid crystals are colorless.

Uric acid kidney stones are often red–orange–brown in color.

The stone color originates from a variety of components in the matrix, some of which are a broad range of urinary pigments or urochrome.

What is the color of uric acid stones

Uric acid stones – Light microscopy of urine- urinary crystallizations with characteristic rectangular or rhomboid-shaped uric acid crystals.

Finding such crystals, along with an acidic urinary pH of 5.5 or less, is suggestive but not diagnostic of uric acid urolithiasis.

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