Age at onset should be a major criterion for subclassification of colorectal cancer.

An important proportion of early-onset colorectal cancer (CRC) does not show a hereditary component with limited knowledge about its molecular basis and features. We analyzed a subset of patients with early-onset CRC and compared them with patients with late-onset CRC. We analyzed the microsatellite instability and CpG island methylator phenotype (CIMP) in both populations and classified them into four molecular subtypes.

Lung transplantation in a patient with arteriovenous malformations.

Multiple arteriovenous fistulas (AVF) is an infrequent pathology, in which lung transplant is controversial. We report a patient with hereditary hemorrhagic telangiectasia who underwent a single lung transplant with excellent evolution, and three years later (that is, at the time of this paper), she is still alive.