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Staging of oesophageal cancer: the hypoechoic expansion of the oesophageal wall with tumour (T) does not invade the muscularis propria (black layer), hence is staged at T2. There is a regional lymph node (LN) measuring 0.73 × 0.5 cm that is round and hypoechoic, suggestive of malignant involvement. The aorta (AO) and heart can be seen adjacent.
