Wilms tumour and renal malignancies: Case

Framing the case

This three-year-old girl has the classic presentation of a Wilms tumour. The painless abdominal mass found by the parent at the bath time, the smooth firm flank mass that does not cross the midline, and the hypertension, together make the renal tumour the working diagnosis, and the first decision is to move the child from the routine workup to the urgent imaging and the specialist referral. The framework that organises the case is the age, the preschool child, and the biology, the favourable-histology Wilms that is cured in around ninety percent. [1][4]

Immediate assessment and stabilisation

The assessment begins with the airway, the breathing and the circulation, and the blood pressure, because the hypertension is common and the tumour rupture is the emergency. The child is comfortable and stable, so the focus turns to the imaging. The hypertension, at the ninety-fifth percentile, is noted and the careful antihypertensive is begun if it worsens, but it is not the emergency here. The family is told that the mass is a tumour until the imaging settles it, and the child is kept calm and at rest to avoid the rupture. [9]

The diagnostic pathway

The abdominal ultrasound with the Doppler of the renal vein and the inferior vena cava is the first test, and it confirms the solid renal mass and shows no tumour thrombus in the cava. The computed tomography or the magnetic resonance imaging of the abdomen defines the size and the local extension, and the chest computed tomography shows no pulmonary metastases. In the Children's Oncology Group approach, the radiologically typical tumour proceeds to the radical nephrectomy without the biopsy, because the biopsy breaches the capsule and spills the tumour, which upstages the disease to the stage three and commits the child to the radiotherapy. [4][9]

The named diagnosis and the definitive management

The diagnosis is a localised, favourable-histology Wilms tumour, the stage one or two disease completely resected. The definitive management is the upfront radical nephrectomy with the lymph node sampling, followed by the two-drug regimen of the vincristine at one point five milligrams per square metre per dose weekly capped at two milligrams per dose and the dactinomycin at forty five micrograms per kilogram per course every three weeks, with no radiotherapy. The survival exceeds ninety percent for the stage one disease. The girl is enrolled on the national protocol, and the multidisciplinary team is assembled: the paediatric oncologist, the surgeon, the radiation oncologist, the nephrologist, the cardiologist, the clinical nurse specialist, the social worker and the educational liaison. [4]

Contrasting the higher-stage and the unfavourable disease

The examiner asks the candidate to contrast this localised favourable-histology tumour with the higher-stage and the unfavourable-histology disease. The stage three disease receives the three-drug regimen that adds the doxorubicin at forty five milligrams per square metre per course, along with the abdominal radiotherapy, and the survival sits around eighty to ninety percent. The stage four disease, with the lung metastases, receives the three-drug regimen and the lung radiotherapy. The diffuse anaplasia is treated with the intensive regimen that adds the cyclophosphamide, the etoposide and the carboplatin, and it carries the worse prognosis. Holding the curable localised disease against the higher-stage and the anaplastic disease is the reasoning the boards reward. [8][9]

Communication and the family

The family is counselled honestly and hopefully. The candidate names the diagnosis, explains that the Wilms tumour is the commonest renal malignancy of childhood and that the favourable-histology disease is cured in around ninety percent, and that the treatment runs over several months with the surgery and the chemotherapy. The parents are introduced to the multidisciplinary team, given a written plan, taught the recurrence signs and the late-effects surveillance, and supported by the social work and the educational liaison. The girl is prepared in an age-appropriate way, and the siblings and the school are included. [6]