PMC6605763_01
MR Urography revealed right-sided moderate to severe hydronephrosis and moderate hydroureter to mid ureter, secondary to an extrinsic paravertebral soft tissue mass (arrow) (measuring approximately 2x2.7x3.8 cm), encasing the ureter at the level of the right iliac vessels bifurcation.
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Magnetic Resonance Urography revealed right-sided moderate to severe hydronephrosis and moderate hydroureter to mid-ureter, secondary to an extrinsic paravertebral soft tissue mass (measuring approximately 2x2.7x3.8 cm), encasing the ureter at the level of the right iliac vessels bifurcation. (Figure 1) Color Doppler ultrasonography of the lower extremity veins was normal with no sign of DVT.
Invasive carcinoma with perivascular invasion. H&E, 100X.
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Nests of infiltrating carcinoma show squamoid differentiation. H&E, 100X.
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Nests of malignant squamous cells infiltrated the periglomerular as well as the interstitial spaces (Figure 3).
Neoplastic cells with small foci of keratin formation. H&E, 400X.
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There were some neoplastic cells with small foci of keratin formation (Figure 4).
Squamous nests with intercellular desmosomes and bridges. H&E, 400X.
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There were also some Squamous nests with obvious intercellular desmosomes and bridges, which were characteristic for SCC (Figure 5).