Error message

Deprecated function: The each() function is deprecated. This message will be suppressed on further calls in book_prev() (line 775 of /home/pathwa23/public_html/modules/book/book.module).


  • An aneurysm is a pathological dilation of a section of vasculature or heart. A variety of clinically important aneurysmal subtypes are discussed below distinguished by their anatomical location or pathogenic mechanism.
  • True vs Pseudo
    • True Aneurysms are bounded by all three layers of the blood vessel, meaning the tunica, media, adventitia
    • Psuedo-Aneurysms are generated when blood dissects into the vascular wall itself and may be bounded only by the tunica adventitia or by a perivascular thrombus
  • Fusiform vs Saccular
    • Fusiform aneurysms appear as symmetric dilations of the blood vessel
    • Saccular aneurysms arise from focal defects of the vessel wall and thus manifest as local outpouchings
Member Diseases