Prompt cytological diagnosis was carried out on 45 cases of bone tumors. Cytocolour stain (Merck; Szczepanik modification of Papanicolaou stain) and Hemacolour stain (Merck) were used for cytological diagnosis. Cytocolour stain requires only 3 minutes for completion of stain and Hemacolour stain 15 seconds. In 31 cases of malignant bone tumors, 25 cases were diagnosed malignant but one case diagnosed benign (false negative).
In 14 cases of benign bone tumors, 8 cases were diagnosed benign but 2 cases diagnosed malignant (false positive).
These prompt stains were useful for cytological diagnosis of bone tumor on the point of time and accuracy.