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Diseases » Inguinal hernia » Causes
 

Causes of Inguinal hernia

List of causes of Inguinal hernia

Following is a list of causes or underlying conditions (see also Misdiagnosis of underlying causes of Inguinal hernia) that could possibly cause Inguinal hernia includes:

Inguinal hernia Causes: Book Excerpts

Inguinal hernia: Related Medical Conditions

To research the causes of Inguinal hernia, consider researching the causes of these these diseases that may be similar, or associated with Inguinal hernia:

Inguinal hernia: Causes and Types

Causes of Broader Categories of Inguinal hernia: Review the causal information about the various more general categories of medical conditions:

Inguinal hernia as a complication of other conditions:

Other conditions that might have Inguinal hernia as a complication may, potentially, be an underlying cause of Inguinal hernia. Our database lists the following as having Inguinal hernia as a complication of that condition:

Inguinal hernia as a symptom:

Conditions listing Inguinal hernia as a symptom may also be potential underlying causes of Inguinal hernia. Our database lists the following as having Inguinal hernia as a symptom of that condition:

What causes Inguinal hernia?

Causes: Inguinal hernia: Obesity, pregnancy, heavy lifting, and straining to pass stool can cause the intestine to push against the inguinal canal. (Source: excerpt from Inguinal Hernia: NIDDK)

Related information on causes of Inguinal hernia:

As with all medical conditions, there may be many causal factors. Further relevant information on causes of Inguinal hernia may be found in:

Causes of Inguinal hernia: Online Medical Books

16 MEDICAL BOOKS ONLINE! Review excerpts from medical books online, free, without registration, for more information about the causes of Inguinal hernia.

Inguinal hernia: Causes and incidence
(Professional Guide to Diseases (Eighth Edition))

An inguinal hernia may be indirect or direct. An indirect inguinal hernia, the more common form, results from weakness in the fascial margin of the internal inguinal ring. In an indirect hernia, abdominal viscera leave the abdomen through the inguinal ring and follow the spermatic cord (in males) or round ligament (in females); they emerge at the external ring and extend down the inguinal canal, commonly into the scrotum or labia. An indirect inguinal hernia may develop at any age, is more common in males, and is especially prevalent in infants younger than age 1. According to the American Academy of Pediatrics, about 5 out of 100 children have inguinal hernias.

A direct inguinal hernia results from a weakness in the fascial floor of the inguinal canal. Instead of entering the canal through the internal ring, the hernia passes through the posterior inguinal wall, protrudes directly through the transverse fascia of the canal (in an area known as Hesselbach’s triangle), and comes out at the external ring.

In males, during the seventh month of gestation, the testicle normally descends into the scrotum, preceded by the peritoneal sac. If the sac closes improperly, it leaves an opening through which the intestine can slip. In either sex, a hernia can result from weak abdominal muscles (caused by congenital malformation, trauma, or aging) or increased intra-abdominal pressure (due to heavy lifting, pregnancy, obesity, or straining).

About 10% of people develop some type of hernia during their lifetime, and more than 500,000 hernia operations are performed in the United States each year. Hernias are seven times more common in males than in females.

» READ BOOK EXCERPT ONLINE »

Source: Professional Guide to Diseases (Eighth Edition), 2005

Inguinal hernia: Causes
(Handbook of Diseases)

In males, during the 7th month of gestation, the testes normally descend into the scrotum, preceded by the peritoneal sac. If the sac closes improperly, it leaves an opening through which the intestine can slip. In either sex, a hernia can result from weak abdominal muscles or increased intra-abdominal pressure. An inguinal hernia may be indirect or direct.

Indirect inguinal hernia

An indirect inguinal hernia, the more common hernia, results from weakness in the fascial margin of the internal inguinal ring. This type of hernia enters the inguinal canal through the internal inguinal ring and emerges through the external inguinal ring. The hernia extends down the inguinal canal into the scrotum or labia.

An indirect inguinal hernia may develop at any age, is three times more common in males, and is especially prevalent in infants younger than age 1.

Direct inguinal hernia

A direct inguinal hernia results from a weakness in the fascial floor of the inguinal canal. Portions of the bowel or omentum protrude through the floor of the inguinal canal to emerge through the external ring extending above the inguinal ligament. Instead of entering the canal through the internal ring, the hernia passes through the posterior inguinal wall, protrudes directly through the fascia transversalis of the canal (in an area known as Hesselbach’s triangle), and comes out at the external ring.

» READ BOOK EXCERPT ONLINE »

Source: Handbook of Diseases, 2003

Inguinal Hernia: Inguinal Hernia - risk factors
(The 5-Minute Pediatric Consult)

  • Prematurity
  • Urologic conditions: Cryptorchidism, hypospadia, epispadia, bladder exstrophy
  • Abdominal wall defects: Gastroschisis, omphalocele

Conditions that increase intra-abdominal pressure: Ascites, peritoneal dialysis, ventriculoperitoneal shunt

  • Meconium peritonitis
  • Cystic fibrosis
  • Congenital dislocation of the hip
  • Connective tissue disease: Marfan syndrome, Ehlers-Danlos syndrome
  • Mucopolysaccharidoses
  • Family history

Inguinal Hernia - pathophysiology

  • In boys, during the seventh month of gestation, the testes begin their descent from the peritoneal cavity, where they developed, through the inguinal canal and down into the scrotum.
  • Between the 7th and 9th months of gestation, the testes reach the scrotum, at which point the processus vaginalis—an outpouching of the peritoneum attached to the testes—begins to obliterate spontaneously, leaving a small potential space adjacent to the testes, called tunica vaginalis.
  • In girls, although the ovaries do not leave the abdomen, the round ligament (part of the gubernaculum) travels through the inguinal ring into labium majus. When the processus vaginalis remains open, it is called the canal of Nuck.
  • Incomplete obliteration of the processus vaginalis leaves a sac of peritoneum extending all the way from the internal inguinal ring to the scrotum or labium majus, from which an inguinal hernia may develop.

» READ BOOK EXCERPT ONLINE »

Source: The 5-Minute Pediatric Consult, 2008


 » Next page: Risk Factors for Inguinal hernia

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