PMC6243293_01
Sagittal T2 weighted MRI: arrow shows rectal tumour with an abscess posterior to the tumour.
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fig1
There was also a loculated collection seen just posterior to the tumour on MRI performed for local staging (Figure 1).
Coronal oblique venous phase contrast-enhanced CT: long arrow points to a large retroperitoneal abscess while the short arrow points to the tracking via the obturator space into the scrotum.
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PMC6243293_01_bjrcr.20150284.g002.jpg
fig2
A repeat CT scan was ordered to investigate the cause of the scrotal swelling (Figure 2).