Learning objectives
Describes the MR imaging appearances of the normal scrotum
Identifies various entities: extra-testicular and intra-testicular tumors and pseudotumors that manifest as solid scrotal masses
Describes the typical clinical,
ultrasonography and MR imaging features of scrotal tumors and pseudotumors
Background
Currently,
the imaging method of choice for evaluation of scrotal lesions is ultrasonography (US) because of its high accuracy,
excellent depiction of scrotal anatomy,
low cost,
and wide availability.
However,
in about 4% of cases,
US can be inconclusive because of discordant clinical findings or wide differential diagnosis.
Magnetic resonance imaging is an accurate and cost-effective diagnostic adjunct in those patients with solid scrotal lesions for whom the findings from clinical and US evaluations are inconclusive.
MR imaging allows tissue characterization,
with its signal intensity...
Findings and procedure details
NORMAL SCROTUM
The normal testis is a sharply demarcated homogeneous oval structure with low to intermediate signal intensity on T1-weighted images and high signal intensity on T2-weighted images.
High signal intensity of the testis on T2-weighted images allows excellent depiction of focal solid testicular masses,
which most commonly have lower T2 signal intensity.
Contrast material–enhanced images demonstrate homogeneous enhancement of the testis and hyperintensity of the epididymis relative to the testis.
The scrotal wall is typically hypointense on T1- and T2-weighted images.
MR IMAGING TECHNIQUE...
Conclusion
MRI has a great ability to characterize certain lesions,
such as lipoma and other fat-containing lesions,
hematoma,
fibrous pseudotumor,
and focal testicular infarction.
Gadolinium-enhanced imaging can be used to demonstrate areas of absent or reduced testicular perfusion and can differentiate between a benign cystic lesion and a cystic neoplasm.
The pattern of enhancement assists in lesion characterization.
All malignant lesions show marked enhancement and all lesions with no pronounced enhancement are benign.
Intravenous contrast material is not routinely required but is often helpful.
Malignant lesions...
Personal information
Dr.B.Ashraf Ahmed MD.RD
Associate Professor
Dept of Radiology,
Melmaruvathur Adhiparasakthi Institute of Medical Sciences and Research
Melmaruvathur
Kancheepuram District
Tamilnadu -603319
India
Dr.M.Farooque,
M.B.B.S
Final year postgraduste
Dept of Radiology
Chettinad Hospital & Research Institute
Chennai
Tamilnadu-603103
India
Dr.F.Abubacker Sulaiman MD.RD,EDiR
Professor & Head of Department
Dept of Radiology
Melmaruvathur Adhiparasakthi Institute of Medical Sciences and Research
Melmaruvathur
Kancheepuram District
Tamilnadu -603319
India
Dr.J.Viyango PandianMD.RD
Assistant Professor
Dept of Radiology
Melmaruvathur Adhiparasakthi Institute of Medical Sciences and Research
Melmaruvathur
Kancheepuram District
Tamilnadu -603319
India
Dr.K.Saravannan...
References
1) Cassidy Fiona Hughes,Ishioka Kevin M,McMahonColm J,ChuPauline ,SakamotoKyoko,LeeKaren S,AganovicLejla.MR Imaging of Scrotal Tumors and Pseudotumors.
Radiographics:Vol.
30,
No.
3
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