Kate and Guddi meet Judith, a singer who has been delaying treatment of a thyroid nodule for fear it may damage her singing voice, as well as Melina, whose love for good food has been curtailed because of agonising gallstone attacks.Judith grew up performing and surrounded by music, so she decided to follow a career as a singer. However, whilst abroad working on her music, she noticed a lump in her neck. It was a nodule on her thyroid, a gland in the neck that produces important hormones. While thyroid nodules are common as you get older, most people won't notice them. But Judith's nodule has now grown so much it has started to not only impact her singing, but also her sleeping and breathing.Judith is hoping a three dimensional look at the growth in our state-of-the-art hub will help her to understand why surgery is the best option and to come to terms with her condition.Another common medical condition that often goes unnoticed is affecting our next patient. Melina has gallstones in her gallbladder, a small organ that sits below the liver and aids digestion. The stones are blocking her gallbladder and certain types of food will trigger gallbladder attacks, as the organ cannot function properly, leaving her in immense pain.Melina, who moved to the UK from America to support her mother, has had to make radical changes to her diet to prevent the attacks. But for someone who enjoys good food and who works in a luxury chocolate shop, this has been hard. Melina will face up to the severity of her case through our incredible technology. But will surgery allow Melina a return to normal life and normal food?