The role of appendectomy and cholecystectomy in the pathogenesis of colorectal carcinomas.

Background: Several alterations in the gastrointestinal tract which occur after appendectomy or cholecystectomy have been suggested to raise the risk of developing colorectal carcinoma. Given the frequency that these procedures are performed, we sought to determine whether a history of either cholecystectomy or appendectomy increased the risk of future colorectal carcinoma.

Methods: We determined the number of patients with a history of appendectomy and cholecystectomy who developed colorectal carcinoma between January 2018 and February 2021, as well as the latency time between the two diseases.

An objective classification system of air mass types for Szeged, Hungary, with special attention to plant pollen levels.

This paper discusses the characteristic air mass types over the Carpathian Basin in relation to plant pollen levels over annual pollination periods. Based on the European Centre for Medium-Range Weather Forecasts dataset, daily sea-level pressure fields analysed at 00 UTC were prepared for each air mass type (cluster) in order to relate sea-level pressure patterns to pollen levels in Szeged, Hungary. The database comprises daily values of 12 meteorological parameters and daily pollen concentrations of 24 species for their pollination periods from 1997 to 2001.

[Our experience with patients operated after neoadjuvant therapy].

The authors performed thoracotomies on 47 patients because of NSCLC between 1 January 2000 and 31 December 2003. All patients had neoadjuvant therapy which was indicated by IIIA stage NSCLC with N2 nodal status. After the neoadjuvant therapy almost all tumors (92.