Conversation: The conversation between human and AI assistant.
[|Human|] Last year we were misdiagnosed with cancer . (multiple melanoma ) he was 2 days away from radiation and then he was told he doesnt have it. They have no idea what he has. The tumor was in his sinus cavity. Recently he has been hurting everytime he goes to the restroom. He drinks on a regular basis. I was just wondering what could be causing this. He doesnt have hemmoroids
[|AI|]  Hi jenny, I would like to know whether it is multiple myeloma or malignant melanoma. Both this can occur in sinus cavity. If there is any brain metastasis due to melanoma he can have some behavioral problem depending upon the size and location of the tumor metastasis in brain. If it is myeloma then there is a chance of platelet abnormality which may cause bleeding after passing stools. Whatever it is a biopsy from the lesion in the sinus cavity will rule out cancer. An oncologist consultation is mandatory.