Dr. Marwan diagnoses and treats all tumors including breast tumors, gastrointestinal tumors, respiratory system tumors, urogenital tumors, nervous system tumors, and hematological tumors. It also treats all blood diseases, blood cell disorders, platelets, thrombosis, and blood thinning diseases. Dr. Marwan also performs preventive detection and early examination of tumors. Dr. Marwan also performs immunotherapy and biotherapy.

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