title: [Unusual picture of periarteritis nodosa. (Based on 2 personal observations)].
mesh_terms: D000328:Adult; D000792:Angiography; D003951:Diagnostic Errors; D006471:Gastrointestinal Hemorrhage / Q000601:surgery; D006801:Humans; D007841:Latex Fixation Tests; D008297:Male; D008875:Middle Aged; D010488:Polyarteritis Nodosa / Q000175:diagnosis*
vernacular_title: Niezwykły obraz guzkowego zapalenia naczyń. (Na marginesie dwóch obserwowanych przypadków)