Senior residents as teaching assistants during laparoscopic cholecystectomy in the 80-hour workweek era: effect on biliary injury and overall complication rates.

Purpose: The resident as teaching assistant (TA) in the operating room is an important role in the maturation of surgical trainees. One concern in the current 80-hour workweek era is that current senior residents (SRs) are unprepared to serve as TAs, potentially leading to higher complication rates and a significant increase in the length of operations. The aim of this study was to analyze whether SRs serving as TAs during laparoscopic cholecystectomy (LC) resulted in an adverse effect on complication rates in the 80-hour workweek era.

Active Fe-containing superoxide dismutase and abundant sodF mRNA in Nostoc commune (Cyanobacteria) after years of desiccation.

Active Fe-superoxide dismutase (SodF) was the third most abundant soluble protein in cells of Nostoc commune CHEN/1986 after prolonged (13 years) storage in the desiccated state. Upon rehydration, Fe-containing superoxide disumutase (Fe-SOD) was released and the activity was distributed between rehydrating cells and the extracellular fluid. The 21-kDa Fe-SOD polypeptide was purified, the N terminus was sequenced, and the data were used to isolate sodF from the clonal isolate N.

Use of intraperitoneal 5-fluorouracil and chlorhexidine for prevention of recurrence of perforated colorectal carcinoma in a rat model.

Purpose: Colorectal cancer is a prevalent and mortal disease, resulting in nearly 55,000 deaths in the United States annually. Preoperative or intraoperative spillage of tumor cells because of perforation occurs in up to 10 percent of cases. When this spillage occurs, the chance of recurrence and death is dramatically increased.

Rectal carcinoma: are we making a difference?

Evaluation of preliminary results at our institution revealed an improvement in survival of patients treated for rectal cancer from 1950-1988. A study was conducted to analyze responsible factors. A total of 335 patients with accurate staging and follow up for at least 5 years or until death were reviewed retrospectively.

Cutaneous extravascular necrotizing granuloma (Winkelmann granuloma): confirmation of the association with systemic disease.

Background: An unusual palisading granuloma has been described in patients with immunoreactive diseases. Multiple names have been given to this lesion.

Objective: Our aim was to verify whether a distinct palisading granuloma can be used as a marker for systemic disease.