The striated testis is an imaging finding that is seen in symptomatic and asymptomatic individuals and represents a wide range of underlying etiologies.
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Pathology
Testicular striations represent interstitial infiltration along interlobular septa, which extend from the mediastinum testis and include also vessels and lymphatics.
In geriatric people, the most common cause is interstitial fibrosis. In adolescent individuals, a few of the causes include trauma, orchitis, testicular infarction and primary testicular neoplasms like seminoma, leukemia and non-Hodgkin lymphoma 1.
Radiographic features
Ultrasound
multiple hypoechoic bands extend through mediastinum testis 1,2
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color Doppler study
normal color flow through striations is seen in benign non-inflammatory conditions like fibrosis
increased color flow is mostly seen in acute orchitis
Management and prognosis
The stability of a unilateral striated testicle over a 1-year follow up is likely reflecting a benign process like testicular fibrosis 2.
This finding can be of little significance in the absence of important clinical findings or color Doppler flow and can be followed up clinically and sonographically 2.