Pityriasis alba: Possible associations with intestinal helminths and pathogenic protozoa.

Background: The aetiology of pityriasis alba (PA) remains uncertain, and children are at risk for PA and intestinal parasites.

Aim: To determine the prevalence of intestinal parasites in PA patients and to evaluate their possible role in PA pathogenesis.

Methods: Overall, 180 PA patients and 100 healthy individuals were enrolled.

Intestinal helminths and protozoan infections in patients with colorectal cancer: prevalence and possible association with cancer pathogenesis.

The purpose of the present study was to determine the prevalence of intestinal helminths and protozoa in colorectal cancer (CRC) patients and to evaluate the possible association between the prevalence and CRC pathogenesis. A total of 200 CRC patients and 200 residents of Tashkent, who had no complaints related to the gastrointestinal tract, were examined by triple coproscopy using a concentration method and estimations of protozoan infection intensity. Of the CRC patients tested, 144 were classified as T-NM (without metastases) and 56 were classified as TNM (with metastases).