1. Reprints: Michal Zámečník, MD, General Hospital, 911 71 Trencin, Slovak Republic (zamecnikmichal@hotmail.com).
2. From the Department of Pathology, Slovak Postgraduate Academy of Medicine, Bratislava, Slovak Republic (Dr Zámečník); the Šikl's Department of Pathology, Faculty Hospital, Pilsen, Czech Republic (Dr Michal); and the Department of Pathology, Ostrava Faculty Hospital, Ostrava, Czech Republic (Dr Čuřík).