The syndrome of sensory neuronopathy and detection of anti-Hu antibody in 2010 were very strong indications of the presence of a malignant tumour. In a series of 200 patients positive for anti-Hu, 83.5 percent were found to have cancer, and 90 percent of the cancer cases were small-cell lung cancer.
A 55-year-old man presented with almost one year history of heat intolerance, mild palpitation and significant weight loss. Free T3 and T4 were elevated with normal TSH. Patient had suboptimal response to carbimazole therapy.