DNA microarrays can be used to formulate a molecular predictor of survival after chemotherapy for diffuse large-B-cell lymphoma.

Administration of fluoroquinolones emerged as the most important risk factor for CDAD in Quebec during an epidemic caused by a hypervirulent strain of C. difficile.

Para-aortic lymphadenectomy should remove all of the left para-aortic chain (inframesenteric and supramesenteric) and so should be performed up to the level of the left renal vein. According to the low frequency of para-aortic involvement when tumor size is below 2 cm, such a procedure could be avoided in patients with small tumors.