[Problems in the differential diagnosis of intestinal diseases in patients who have traveled in the tropics]. / Differentialdiagnostische Probleme bei Darmerkrankungen Tropenreisender.

Taking into consideration the increasing intercontinental tourist traffic we are in an increasing degree confronted with diseases which above all or exclusively acquired in warm countries. Besides the diseases which occur in our country they must find differential diagnostic consideration in disturbances of the health. On account of their frequency gastrointestinal disturbances they are essential for these travellers. On the basis of the following instances of diseases problems of the differential diagnosis and the evaluation of findings are shortly demonstrated: colon amoeboma; colon carcinoma; colon polyposis; ascaridasis; lambliasis; trichuriasis, affection with fasciola hepatica; affection with fasciolopsis buski; schistosomiasis intestinalis. It is referred to peculiarities in inhabitants of the tropics who transitorily live in our climatic zone.

[Human myiasis in middle Europe]. / Myiasis beim Menschen in Mitteleuropa

A report is given on 4 cases of myiasis of the mucous membrane of different localisation and etiology observed in the GDR (vaginal myiasis by Lucilia sericata, urethral and vesicular myiasis by Calliphora vicina, rectal myiasis by Sarcophaga haemorrhoidalis and ophthalmomyiasis by Oestrus ovis). Biological peculiarities and habits of life of the causative organisms, pathogenesis of the different forms of parasitosis in man and clinical pictures are described. The cases mentioned show that occasionally is to reckoned with autochthonic myiasis - above all due to larve of blue-bottles, meat and bot-flies - not only in tropic countries, but also in Middle Europe (especially during the warm seasons and when a considerable quantity of flies is present). Among the predisposing factors for furunculous and migrating skin myiasis as well as wound, urogenital, intestinal and other myiases of the mucous membrane comatous conditions due to severe basic diseases play a special part. On unhygienic conditions, however, the parasitic invasion of the maggots of certain, in general harmless species of flies into the integumentum and into various hollow organs of man is just possible also in primarily healthy persons with good general condition. In an adequate anamnesis and suspicious clinical symptomatology, therefore, a myiasis should be included into differential-diagnostic considerations.