PMC3625584_01
Magnetic resonance imaging (MRI) of the pelvis showing 13 x 11.7 x 6.8 cm lobulated heterogeneous mass in the right gluteus medius muscle also involving the right gluteus maximus, piriformis muscles extending to the right iliac bone and the right sacroiliac joint.
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fig1
The anteroposterior center of lesion was found within the right gluteus medius muscle; thus, the origin of the lesion was muscular rather than bony (Figure 1).
(a) Infiltrating clusters of papillary tumor cells in the skeletal muscle (H&E x 100) and (b) the follicular tumor cells (H&E x 200).
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fig2
Tg, and thyroid transcription factor-1 (TTF-1) made confirmed diagnosis of gluteal muscle metastasis consistent with FTC (Figure 2). Thyroid stimulating hormone (TSH) and thyroxin (T4) were found within normal limits; however, serum thyroglobulin (Tg) levels were raised, that is, 5632 ng/mL (normal: 5-25 ng/mL).
Palliative radiotherapy 30 Gy in 10 fractions to the right gluteal mass using posteroanterior (PA) and right lateral beams.
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fig3
Patient received 30 Gy in 10 fractions to the right gluteal mass (Figure 3).