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The authors analysed 2849 patients who were admitted to the Department of General Surgery, Regional Hospital in Pisz in the years 1980-1989 with symptoms suggestive of appendicitis. In 983 cases surgical intervention was abandoned, because the symptoms regressed spontaneously or were caused by diseases of other organs. The pathological conditions associated with appendicitis are analysed in 1866 surgically treated patients. Cases of appendicitis caused by Oxyuris vermicularis, Salmonella-enteritidis and actinomycosis (one case each) and appendicular carcinoma (2 cases) are described in more detail. Attention is called to the aetiology, pathogenesis and treatment of these rare causes of appendicitis.

Results of anal swabs have been compared with room dust samples. The room dust was collected using little brushes as well as a vacuum cleaner from a standard surface of 0.25 m2. To collect room dust by vacuum cleaner, a slide was placed into a special chamber, connected to an absorbing device. Eggs of E. vermicularis have been found in samples made with anal swabs, room dust brushes and the vacuum cleaner, respectively, as follows: in the first examination 34%, 17.4% and 25.1%, in the second examination 35%, 17.7% and 15.7% and in the third examination 42%, 15.7% and 35.4%.. The results are discussed with regard to methodical and epidemiological aspects of the examination eggs of E. vermicularis in room dust.

An Enterobius vermicularis within the parenchyma of the ovary is a rare phenomenon. We present a case and propose that the gravid female, after wandering from perianal skin into the vagina and then through the female genital passages, arrived at the ovary and entered a recently ruptured graafian follicle.

A pinworm granuloma of cervix uteri was found incidentally in a hysterectomy specimen following cone biopsy for severe epithelial atypia. This lesion was regarded as too recently formed to be related to prior IUD use. The granuloma was apparently asymptomatic, as were 24 of 34 such lesions cited as involving uterus, adnexa or pelvic peritoneum or some combination of these sites. The only previous instance to be found of apparently deep cervical invasion by pinworms was associated with grossly evident carcinoma; the intact cervix has not yet been reported as subject to pinworm invasion.