Pathology and Microbiology NBDE 1986

Which of the following is most commonly associated with development of gastrointestinal cancer?

A) Pedunculated adenoma
B) Meckel's diverticulum
C) Duodenal peptic ulcer
D) Diverticulosis
E) Villous adenoma

Removal of the capsule from an encapsulated bacterium is likely to result in.
A) increased susceptibility to mutation.
B) loss of viability.
C) failure of the cell to gram stain.
D) increased susceptibility to phagocytosis
.E) decreased generation time.

The alum adjuvant employed in many vaccines acts biologically in tissues to

A) prolong antigen release to immunocompetent cells in the region.
B) Both (1) and (2) above
C) Neither (1) nor (2) above
D) serve as a local inflammatory stimulus.

The most reliable gaseous sterilizing agent available for dental instruments is
A) carbon dioxide.B) hydrogen sulfide.C) ethylene oxide.D) formaldehyde.

Peptic Ulcer Disease

- most common cause
- most common place
- major complications