In this article was described a patient, TCh, a man, 51 years old, with a rare form of aphasia – mixed transcortical aphasia ( also called The Isolation Syndrome). The speech impairment occurred after postthrombical hemorrhagic stroke of the median artery the left hemisphere. In spite of severe impairment of conversational speech and auditory comprehension the patient had preserved repetition of the single words and the sentences composed of three words; he could pronounce the automatic strings of speech.