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Articles

Articles are a collaborative effort to provide a single canonical page on all topics relevant to the practice of radiology. As such, articles are written and edited by countless contributing members over a period of time. A global group of dedicated editors oversee accuracy, consulting with expert advisers, and constantly reviewing additions.

98 results found
Article

Vulval cancer (staging)

Staging of vulval cancer is the FIGO staging system and is as follows: stage 0: carcinoma in situ (pre-invasive); corresponds to Tis stage I: tumor <2 cm (greatest dimension) and confined to vulva/perineum; corresponds to T1 stage Ia: stromal invasion by <1 mm Stage Ib: stromal invasion by >...
Article

Waldenström classification of Perthes disease

The Waldenström classification of Perthes disease refers to x-ray abnormalities, and represents four temporal phases of the disease. These stages have been further subdivided in the modified Elizabethtown classification 2. stage I: early asymmetric femoral epiphyseal size (smaller on the affec...
Article

Wall motion score index (echocardiography)

Calculation of the left ventricular wall motion score index (WMSI) with transthoracic echocardiography allows the semi-quantification of left ventricular ejection fraction (LVEF). Calculation of the LVEF with a WMSI demonstrates stronger agreement with measures obtained by cardiac MRI, the gold ...
Article

WHO criteria in tumor response

The WHO criteria were developed in the 1980s under the auspices of the World Health Organization (WHO) to standardize reporting of cancers in clinical trials.​ Nowadays, newer criteria often based on the WHO criteria (such as RECIST, mRECIST, Choi criteria, Lugano response criteria), have widely...
Article

Wilms tumor (staging)

Wilms' tumor staging is largely anatomical and relates to the invasion and spread of the tumor. Where there is invasion or metastasizes, prognosis is poorer. Wilms tumor, is one of the more common childhood malignancies. stage I confined to kidney complete resection possible stage II local ...

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