A female patient after 2-3 swallows left from m.sternocleidomastoideus anterior margin manifests painless mass, and together total dysphagia. After hear clamorous murmur, mass disapperars and reestablishing esophageal permeability. Similar phenomenon persists for a long time. Your preliminary diagnosis?
A. Lateral cyst of neck
B. Zenker diverticulus
C. Neck lymphnodes tumor what depress oesophagus
D. Oesophagus neck part cancer
E. Nothing from above
B. Zenker diverticulus