[Differential diagnosis of secondary chondrosarcoma of the bones]. / Differentsial'naia diagnostika vtorichnoi khondrosarkomy kosti.

A procedure based on multifactorial evaluation of the most important clinical and X-ray signs was suggested to differentiate between secondary bone chondrosarcoma and such benign lesions as chondroma and osteochondrous exostosis. The analysis included 100 patients with secondary bone chondrosarcoma and 36 of those with benign lesions. The study used complex parameters derived from two, three or four simple ones. The method described assured a 95% credibility of differential diagnosis.

[Ultrasonically guided aspiration biopsy in the diagnosis of liver tumors]. / Pritsel'naia aspiratsionnaia biopsiia pod ul'trazvukovym kontrolem v diagnostike opukholei pecheni.

The paper is concerned with the analysis of the results of sonographically guided biopsy of hepatic tumors which had been carried out in 30 outpatients suffering primary cancer of the liver (3 cases), metastases (16), lymphosarcoma (2), cysts (2), adenoma (2), hemangioma (4) and hydatidiform mole (1 patient). The sensitivity of the method in tumor diagnosis was 89%, specificity--80%. Ultrasonographic features of the liver pathologies were studied versus morphologic type. Indications and technical requirements for ambulatory ultrasonographically guided biopsy of the liver are discussed.

[Secondary chondrosarcoma]. / Vtorichnaia khondrosarcoma.

A retrospective evaluation of 101 cases of secondary chondrosarcoma was performed. The results of the analysis of X-ray data showed chondrosarcoma to develop from osteocartilaginous exostosis or chondroma (53 and 47 cases, respectively). (One case lacked roentgenologic data). The former pattern of tumor development prevailed in patients under 40 years of age, while the latter one was more frequently observed in the older age group (68% of cases in each age bracket). Secondary chondrosarcoma was most frequently localized to long tubular and flat bones (48 and 34 patients, 47.53 and 33.66%, respectively). Roentgenologic diagnosis of early stage secondary chondrosarcoma was extremely difficult. Histologic examination showed degree I cell anaplasia in most cases. Surgery is the main procedure of treatment of secondary chondrosarcoma. Relapses were observed only in patients who had undergone sparing operations. The smaller the extent of surgery, the higher relapse rate was registered. Fifteen patients (14.87%) died of tumor progression. Sparing procedures were performed in 14 of them (93.3%).