[Diagnostic errors in patients with giant-cell tumor, bone cyst and osteosarcoma].

The article contains diagnostic error analysis of 439 patients with giant-cell tumor (176), bone cyst (158) and osteosarcoma (105) aged 4-75 for theperiod of 1990-2015. Morphological investigation of surgical material taken from the pathological focus sowed that diagnostic errors in clinical and X-ray examinations comprised up to 40.6% in giant -cell cases, 37.

Spontaneous recanalization of chronic occlusion of the internal carotid artery.

Described in the article is a rare case concerning spontaneous recanalization of the extracranial portion of the internal carotid artery (ICA) eleven months after occlusion. Only few publications have been dedicated to recanalization of ICA chronic occlusion. Spontaneous recanalization of the ICA is more common than it is generally understood.