Kidney tumour
tumor or cancer of the kidney
Kidney tumours are tumours, growths, or neoplasm, of, on or in the kidney. These growths can be benign or malignant (kidney cancer).
Presentation
Kidney tumours may be discovered on medical imaging incidentally (i.e. an incidentaloma), or may be present in patients as an abdominal mass or kidney cyst, hematuria, abdominal pain, or manifest first in a paraneoplastic syndrome that seems unrelated to the kidney. Other markers or complications that may arise from kidney tumours can appear to be more subtle, including; low hemoglobin, fatigue, nausea, constipation, and/or hyperglycemia.
Diagnosis
A CT scan is the first choice modality for workup of solid masses in the kidneys. Nevertheless, hemorrhagic cysts can resemble renal cell carcinomas on CT, but they are easily distinguished with Doppler ultrasonography (Doppler US). In renal cell carcinomas, Doppler US often shows vessels with high velocities caused by neovascularization and arteriovenous shunting. Some renal cell carcinomas are hypovascular and not distinguishable with Doppler US. Therefore, renal tumors without a Doppler signal, which are not obvious simple cysts on US and CT, should be further investigated with contrast-enhanced ultrasound, as this is more sensitive than both Doppler US and CT for the detection of hypovascular tumors.
Renal ultrasonography
On renal ultrasonography, a solid renal mass appears in the US exam with internal echoes, without the well-defined, smooth walls seen in cysts, often with Doppler signal, and is frequently malignant or has a high malignant potential.
The public source identifies “Kidney tumour” as tumor or cancer of the kidney. This brief keeps that definition visible, then builds a research path around Kidney, tumour and tumor.
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This entry incorporates text from “Kidney tumour” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.