Microsatellite instability--MSI markers (BAT26, BAT25, D2S123, D5S346, D17S250) in rectal cancer.

Background: Colorectal cancer has an important genetic component. Microsatellites are considered phenotypic markers of prognosis, therapeutic response and identify patients with mutations in DNA repair genes.

Aim: To evaluate the molecular profile of tumors underwent to transanal endoscopic microsurgery-TEM in surgical treatment of rectal cancer.

[Transanal endoscopic microsurgery in the treatment of rectal tumors: a prospective study in 50 patients].

Background: The medical literature accepts local resection as a valuable option in selected cases of rectal tumors. Selection of patients requires an exact perioperative estimation of risks with clinical and histopathological examination. Transanal endoscopic microsurgery aims a safe resection of the tumoral area which leads up to the cure.