No. In fact, as a result of his treatment, John's esophagus is now totally closed. My understanding though is that sleep apnea has little to do with the esophagus. Is your Dad's nostrils also swollen from the treatment? John's were and for the longest time, he did a lot of his breathing through his mouth. The respiration doctor prescribed some nose drops and that solved that problem.

Gloria
She stood in the storm, and when the wind did not blow her way, she adjusted her sails... Elizabeth Edwards

Wife to John,dx 10/2012, BOT, HPV+, T3N2MO, RAD 70 gy,Cisplatinx2 , PEG in Dec 6, 2012, dx dvt in both legs after second chemo session, Apr 03/13 NED, July 2013 met to lungs, Phase 1 immunotherapy trial Jan 18/14 to July/14. Taxol/carboplatin July/14. Esophagus re-opened Oct 14. PEG out April 8, 2015. Phase 2 trial of Selinexor April to July 2015. At peace Jan 15, 2016.