Does recombinant human thyrotropin-stimulated positron emission tomography with [18F]fluoro-2-deoxy-D-glucose improve detection of recurrence of well-differentiated thyroid carcinoma in patients with low serum thyroglobulin?

Background: Thyrotropin (TSH) stimulates thyrocyte metabolism, glucose transport, and glycolysis. The interest in using recombinant human TSH (rhTSH) stimulation of fluoro-2-deoxy-D-glucose (FDG) with positron emission tomography (PET) has been shown, but mainly for patients with high serum thyroglobulin (Tg) concentration. We evaluated the use of rhTSH-stimulated PET-FDG in patients with low serum Tg concentration.

[Paget's disease of the vulva: interest of sentinel lymph node analysis].

Paget's disease of the vulva is difficult to diagnose, as far as the extent of this lesion is concerned, since it is often coupled with invasive adenocarcinoma of the vulva. Thus, we present two cases of Paget's disease of the vulva, with use of sentinel lymph node analysis- a non-validated technique in this very context. Evaluation of sentinel lymph node may be useful in case of micro-invasive Paget's disease.