Selecting certain objects within a microscopic image, counting is amount and area gives important information for a diagnosis and prognosis of a disease. This paper presents a computer program called Komórki for histopathological image analysis consisting in counting number and area of AgNORs. The mean number of AgNORs and AgNORs area estimated by program Komórki was comparable with results of other authors. The consistency of the results obtained by conventional method and computer program was also high. These facts prove usefulness of this program in clinical practice.