[Diagnostic effectiveness pre- and postoperatively in treatment of differentiated thyroid cancer]. / Skutecznosc diagnostyki przed- i sródoperacyjnej w leczeniu zróznicowanego raka tarczycy.

The paper deals with authors experience concerning the prae and intraoperative diagnostics of papillary and follicular thyroid carcinomas (39 cases). The diagnosis of papillary carcinoma has been established by fine needle aspiration biopsy in 80% of cases and by intrasurgical frozen section biopsy in 89% of cases. In contrast, in cases of follicular carcinoma preoperative fine needle aspiration biopsy and intrasurgical frozen section biopsy resulted only in the diagnosis of a follicular neoplasm in 84 and 100% of cases, respectively. Thus, these methods of investigation appeared to be ineffective in the determination of malignancy of follicular tumors. The effectiveness of colour Doppler ultrasound in the differentiation of benign and malignant thyroid tumors could not be evaluated because of a low number of cases.

On cytologic vagaries in the diagnosis of breast tumors.

The article describes the difficulties, the errors and limitations of the fine needle aspiration biopsy technique in the diagnosis of the breast tumors encountered during a 2.5 year period of activity. The question of false-negative and false-positive results and the way these problems were partly overcome in the Institute of Oncology in Warsaw are discussed in detail.