. Abdominal hernia : its diagnosis and treatment. The terms scrotal and labial indicate a stageof growth and should not be used to designate types of truss manufacturers make what they call a scrotal-hernia truss, which is based upon tlie idea that it is for aspecial type of hernia, and it is only mentioned here becausethe author knows that some misapprehension exists in theminds of many practitioners. 56 ABDOMINAL HERNIA. Oblique inguinal hernia may protrude into a preformedsac, present at birth (from lack of obliteration of the tunicavaginalis), in which case it forms a congenita
. Abdominal hernia : its diagnosis and treatment. The terms scrotal and labial indicate a stageof growth and should not be used to designate types of truss manufacturers make what they call a scrotal-hernia truss, which is based upon tlie idea that it is for aspecial type of hernia, and it is only mentioned here becausethe author knows that some misapprehension exists in theminds of many practitioners. 56 ABDOMINAL HERNIA. Oblique inguinal hernia may protrude into a preformedsac, present at birth (from lack of obliteration of the tunicavaginalis), in which case it forms a congenital hernia. Thisprotrusion may occur after the person has reached adult life,even though the defect has existed during all of the precedingyears, but by far the greater number of congenital herniae dooccur in infancy or early childhood. When we speak of con- FiG. Incomplete inguinal hemia on ieit. Direct inguinal henna on hkii. poorly shown. ( EccUs.) genital hernia, therefore, it does not indicate at what age suchhernia may have developed, but does clearly mean that thehemia has come down into a sac already formed. Acquired inguinal hernia refers to a condition wherein theprotruding mass carries with it, as a sac covering, the peritoneallining of the abdomen. This peritoneal pouch is known as thehernial sac and, in the course of time, loses some of its char-acteristics as peritoneum by becoming thickened and otherwisechanged in structure. It continues, however, as a moist, TYPES OF INGUINAL HERNIA. 57 serous niebrane, and as such favors the protrusion of tlieabdominal contents. Direct inguinal hernia does not enter the upper part of theinguinal canal at the internal ring, but protrudes directlythrough the external abdominal ring and presents a tumor Fig. 18.
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