Fa. Karlsson et al., LARGE SOMATOSTATIN-INSENSITIVE THYROTROPIN-SECRETING PITUITARY-TUMOR RESPONSIVE TO D-THYROXINE AND DOPAMINE AGONISTS, Acta endocrinologica, 129(4), 1993, pp. 291-295
A unique thyrotrophin (TSH)-secreting pituitary tumour is described in
a patient with a history of recurrent thyrotoxicosis. Unlike other pr
eviously reported TSHomas, the tumour is insensitive to octreotide, a
somatostatin analogue. It does not accumulate [In-111]octreotide but e
xpresses functional dopamine receptors and responds to the D-isomer of
thyroxine, two characteristics beneficial in the management of the pa
tient.