Dworin and Prinstein have been allowed to regularly visit Gross on Jewish holidays.
Gross reportedly told his two visitors that he lifts weights and walks within the hospital grounds daily. He indicated a lump under his shirt on the right side of his back and said a "scan" had been taken and the results sent to his wife. Dworin understood from what he said that the growth was not malignant.
Cuba has indicated it would like swap Gross for five Cuban intelligence agents sentenced to long prison terms in the U.S., but Washington has rejected such a trade.