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Fig. 1 | BMC Palliative Care

Fig. 1

From: Successful pain control with add-on methadone for refractory neuropathic pain due to radiation necrosis in pontine metastatic lesion: a case report

Fig. 1

Imaging findings upon referral (panels a, b) and at 6 months post-stereotactic radiosurgery (SRS) (panels c, d, e). (a, c) Brain MRI with gadolinium-enhanced T1-weighted imaging (Gd-T1WI) shows (a) a ring-shaped 6 mm nodule on the left side of the pons upon referral, and (c) an enlargement of the nodule at the same site, observed at 6 months post-SRS. (b, d) T2-weighted MRI displays (b) high signal intensity of the nodule without accompanying edema upon referral, and (d) a water-like signal intensity surrounding the enlarged lesion in the pons, indicative of edematous change due to radiation necrosis (RN), at 6 months post-SRS. (e) No significant 11 C-methionine (MET) uptake in the irradiated lesion of the pons at 6 months post-SRS.

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BMC Palliative Care

ISSN: 1472-684X

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