What's the difference between aneurismal and aneurysmal?

Aneurismal

Definition:

(a.) Of or pertaining to an aneurism; as, an aneurismal tumor; aneurismal diathesis.

Example Sentences:

(1) The greatest peroperatory problems with closure of those fistulae are pulmonary emboli by air and aneurismal contents.
(2) In the other, the aneurismal sac was located below the septal valve of the tricuspid, producing a distortion in the anatomical architecture of the atrioventricular orifice.
(3) Abdominal arteriography clearly demonstrated the existence of aneurismal dilations in the liver, pancreas, and kidneys.
(4) Others (40) were descending aortic aneurismal fissure, ascending aortic dissection and compound type B dissection (ischemic form or breaking point).
(5) Pathological features close to those noted in aneurismal bone cysts were often encountered.
(6) This surgical route was used in a case of aneurismal dysplasia at C3 level.
(7) One case of above acetabulum aneurismal cyst is presented and the authors insist on the main features of this benign tumor supplied with radiology, clinic and evolution.
(8) The differential diagnosis is with certain dysplasic and neoplastic lesions of bone such as: bone cyst, non-ossifying fibroma, aneurismal cyst, monostotic fibrous dysplasia, and solitary myeloma.