Uninodular goitre: can be either inactive or a toxic nodule. Multinodular goitre: can likewise be inactive or toxic, the latter called toxic multinodular goitre. Diffuse goitre: the whole thyroid appearing to be enlarged.
Background. Malignant carcinoid syndrome is the constellation of symptoms typically exhibited by patients with metastases from carcinoid tumors. This syndrome is characterized by hot, red flushing of the face; severe and debilitating diarrhea; and asthma attacks.Malignant carcinoid syndrome occurs in fewer than 10% of patients with a carcinoid tumor.Carcinoid tumors arise from neuroendocrine cells, which are widespread in the human body, especially in the organs derived from the primitive intestine.See the image below.his syndrome is characterized by hot, red flushing of the face; severe and debilitating diarrhea; and asthma attacks. Malignant carcinoid syndrome occurs in fewer than 10% of patients with a carcinoid tumor.
malignant melanoma a malignant skin tumor, usually developing from a nevus and consisting of dark masses of cells with a marked tendency to metastasis. It is not common, but its incidence is increasing and it is the most aggressive type of skin cancer.un exposure definitely increases the risk of developing melanoma, particularly in older males. The melanocytes are part of the integument's photoprotective mechanism; in response to sunlight, they produce melanin that has a protective role from the sun's ultraviolet rays.