Duodenal Neuroendocrine Tumour Presenting as GABA B Receptor Autoimmune Encephalitis

الملخص EN

GABA B receptor antibody positive autoimmune encephalitis is rarely seen in clinical practice.

It is usually associated with small cell lung carcinoma, and occasionally with neuroendocrine tumour (NET) of lung.

GABA B receptor antibody can be associated with other autoimmune antibodies like antinuclear antibody and antibody to Glutamic acid decarboxylase.

We present a case with GABA B receptor autoimmune encephalitis associated with neuroendocrine tumour of the duodenum with special emphasis on correlation between immunostaining of the tumour and presence of GABA B receptor antibody.