Testicular Microlithiasis
Prevalence and Tumor Risk in a Population Referred for Scrotal Sonography
James E. I. Cast1,
William M. Nelson1,
Alan S. Early1,
Shekhar Biyani2,
Graeme Cooksey2,
Niall G. Warnock3 and
David J. Breen1
1
Department of Radiology, Hull and East Yorkshire NHS Trust, Hull Royal
Infirmary, Anlaby Rd., Hull HU3 2JZ, United Kingdom.
2
Department of Urology, Hull and East Yorkshire NHS Trust, Hull Royal
Infirmary, Hull HU3 2JZ, United Kingdom.
3
Department of Radiology, York Health NHS Trust, York District Hospital,
Wigginton Rd., York YO31 8HE, United Kingdom.

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Fig. 1. Testicular sonogram of 41-year-old man, who presented with
scrotal lump, shows typical appearance of testicular microlithiasis with at
least five microliths per sonogram. No other abnormality was seen.
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Fig. 2. Testicular sonogram of 33-year-old man, who presented with
scrotal swelling, shows slightly coarser calcifications of up to 3 mm. Number
of microliths is, however, in keeping with diagnosis of testicular
microlithiasis. Swelling was epididymal cyst (not shown).
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Fig. 3. Testicular sonogram of 25-year-old man who presented with
mass in left testis. Note testicular tumor showing coarse calcification with
microlithiasis in surrounding testis.
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Fig. 4. Testicular sonogram of 37-year-old man, who presented with
mediastinal teratoma in 1994, shows clustered microlithiasis centered around
irregular 12-mm hypoechoic area (arrow) toward lower pole. Histology
showed tubular atrophy but no evidence of neoplasia.
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Copyright © 2000 by the American Roentgen Ray Society.