My dad's partner died of cancer a few days ago, he and I were with her when she died, and I've brought him home with me until the funeral (and probably permanently). He's got Alzheimer's and his partner was his carer. He's been looking pained and twisting his shoulder, he said it's just a spot, but I made him show me his back and found this. It looks just like the squamous cell carcinoma he's had removed before, only it's enormous. He's lost weight and is pale and more vague and breathless than usual, but I thought it was just grief 
This is really fucking bad, isn't it? He survived stage 4 lymphoma in 2017 and has a heart condition. I have a doctor calling me back from 111, but should I just take him to A&E?