Changes

Without and with Valsalva maneuver.<ref name="JamadarJacobson2006">{{cite journal|last1=Jamadar|first1=David A.|last2=Jacobson|first2=Jon A.|last3=Morag|first3=Yoav|last4=Girish|first4=Gandikota|last5=Ebrahim|first5=Farhad|last6=Gest|first6=Thomas|last7=Franz|first7=Michael|title=Sonography of Inguinal Region Hernias|journal=American Journal of Roentgenology|volume=187|issue=1|year=2006|pages=185–190|issn=0361-803X|doi=10.2214/AJR.05.1813}}</ref> Preferably also in standing.<ref name="JamadarJacobson2006"/> Look primarily for an increased diameter of the inguinal canal, which is normally up to 13 mm 2 cm (±1 cm in standard deviation) at the deep inguinal ring.<ref group="notes">±2.2cm ±1.08cm in Africans, and 2.1 cm 0.41 ±0.58cm in Europeans.</ref><ref name="KumarPatel 2018MituraKozieł2018">{{cite journal|last1=KumarMitura|first1=VipinKryspin|last2=Patel Kozieł|first2=Jignesh Sławomir|last3=Sharma Pasierbek|first3=Chakraprabha |last4=Inkhiya |first4=Suman Michał|title=Morphometric Study of Inguinal Canal Ethnicity-related differences in inguinal canal dimensions between African and Caucasian populations and their potential impact on Cadaverthe mesh size for open and laparoscopic groin hernia repair in low-resource countries in Africa|journal=International Journal of Anatomy Videosurgery and ResearchOther Miniinvasive Techniques|volume=613|issue=2.1|year=2018|pages=5172–517574–81|issn=232189671895-4588|doi=10.169655114/ijarwiitm.2018.14772579}}</ref>