Complex sentence: In 1977, Raymond Winters was diagnosed with a "large cancerous growth" on his neck described as "wrapped around his carotid artery and attached to the wall of his jugular vein".
Split into simpler sentences: In 1977, Winters' claims to have been diagnosed with a "large cancerous growth" on his neck. He described it as being "wrapped around his carotid artery and attached to the wall of his jugular vein".