A 65-year-old male presents with a history of headaches
and visual disturbance. On examination he has a distinctive facies with
prominent supraorbital ridges, a large nose and prognathos. He has thickening
of his skin and soft tissues. His hands are large and spade like and his feet
too are large. On examination of his visual fields he is noted to have a
bitemporal hemianopia.
In this patient daytime somnolence and sleep apnoea could
occur due to:
