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Type:
Educational Exhibit
Keywords:
Neoplasia, Diagnostic procedure, Ultrasound, MR, CT, Abdomen
Authors:
T. Serna Castro, C. Parrilla Muñoz, J. P. Ruiz Gutierrez, S. Sánchez Rodríguez, G. Silla; Valencia/ES
DOI:
10.1594/ecr2015/C-1530
Findings and procedure details
In the Hospital Clínico Universitario de Valencia it was done a retrospective review of cases in patients with papillary renal cell carcinoma diagnosis,
confirmed by pathology between 2010 y 2014.
Were identified the radiological features of this type of kidney tumor in US,
CT and MRI.
Although ultrasound is very frequently requested to assess the renal tract,
it is not as sensitive or specific as CT or MRI,
In ultrasound papillary renal cell carcinoma is a solid tumor,
that may appear hypo-,
iso-,
or hyperechoic relative to the surrounding renal parenchymase,
heterogeneous,
with little vascularization.
CT is frequently used to both diagnose and stage renal cell carcinomas. CT shows as a solid renal tumor of low attenuation and edges,
the smaller ones tend to be homogeneous,
and more heterogeneous size pockets of central necrosis.
Contrast-enhanced CT the tumor has little enhancement compared to the clear renal cell carcinoma,
given its lower vascularization.
Calcifications may be seen.
MRI is not only excellent at imaging the kidneys and locally staging tumours,
but is also able to suggest the likely histology,
on the grounds of T2 differences.
In RM renal papillary carcinoma frequently have low signal intensity on T1- and T2 Both-weighted images (clear cell renal carcinoma have a high signal intensity on T2),
can present cystic areas,
haemorrhage and in contrast-enhanced MR imaging enhancement is less intense than in clear cell renal carcinoma.
However,
these imaging findings continue to be suggestive but not specific for the diagnosis of papillary renal cell carcinoma.