AAST testis injury scale

Grade*	Description of injury
I	Contusion/hematoma
II	Subclinical laceration of tunica albuginea
III	Laceration of tunica albuginea with <50% parenchymal loss
IV	Major laceration of tunica albuginea with ≥50% parenchymal loss
V	Total testicular destruction or avulsion

AAST: American Association for the Surgery of Trauma.
* Advance one grade for bilateral lesions up to grade V.

Reproduced with permission from: Moore EE, Malangoni MA, Cogbill TH, et al. Organ injury scaling VII: cervical vascular, peripheral vascular, adrenal, penis, testis, and scrotum. J Trauma 1996; 41:523. Copyright © 1996 Lippincott Williams & Wilkins. Available at: https://www.aast.org/resources-detail/injury-scoring-scale#testis (Accessed on December 10, 2019).

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AAST testis injury scale