1.   Biopsy tissues were fixed in buffered formalin and processed routinely through paraffin wax, ensuring optimal orientation at the embedding stage.

2.   We could not find any changes in any reservoir in anterior wall biopsy tissues, suggesting that this is a rare feature in the pouch.

3.   We therefore conclude the endoscopic ultrasound is better than endoscopic biopsy tissue and computed tomography in assessing correctly the response of oesophageal carcinoma to medical treatment.

4.   Because biopsy results are so important in determining treatment, the guidelines stress that all women get a second opinion, or pathology review, on the biopsy tissue.

5.   The material includes blood and urine samples, biopsy tissues and different kinds of imaging scans.