Flashcards in The Appendix Deck (10):
Layers of the colon wall
Mucosa, sub mucosa, inner circular muscle, outer longitudinal muscle, serosa
Blood supply to the appendix
SMA to the ileocolic artery to the appendicular artery
Function of the appendix
Immunologic organ that secretes immunoglobulins, particularly IgA. Integral part of the gut associated lymphoid tissue system. Vestigial organ.
Epidemiology of appendicitis
Peaks in early adulthood and in elderly
Causes of appendicitis
Lymphoid hyperplasia, fecalith, foreign objects (eg fruit seed), stricture, parasites (esp Ascaris)
Increased pain with internal rotation of right thigh
What particular GI infection can especially mimic appendicitis?
Imaging for appendicitis
CT with contrast. Graded compression ultrasound (not as sensitive but also good at ruling of gyn path)
Aka mesenteric lymphadenitis. Lymph nodes of the mesentery are inflamed. Usually resolves on its own. Can be caused by gastroenteritis. Also may be preceded by URI.