Metastatic melanoma

Case contributed by Henry Knipe
Diagnosis almost certain

Presentation

Metastatic melanoma

Patient Data

Age: 85 years
Gender: Female

Chest

x-ray

Multiple pulmonary masses/nodules throughout both lungs.

Cardiomediastinal contour is within normal limits allowing for calcified ectatic descending thoracic aorta. No bony abnormality noted. No free subdiaphragmatic gas.

Chest, Abdomen/Pelvis

ct

1.8 x 1.2cm well-circumscribed, slightly lobulated hypodensity in segment VIII of the liver. Further subcentimeter hypodensities in segments IVb/V and VI. Right adrenal body hypodense (25HU) nodule. Right hydroureteronephrosis with a transition to normal caliber posterior to the pancreatic head and in the region of dilated right ovarian vein. In the region of the ureteric caliber change, there is ovoid soft tissue density within the ureter. Multiple bilateral subcentimeter renal hypodensities. Pancreas, spleen and left adrenal gland have a normal appearance. Sigmoid diverticular disease. Bowel is otherwise unremarkable.

Hyperdense area of bladder wall thickening (up to 1.3cm) on the right. Right adnexal 5.9cm cystic lesion. No inguinal, pelvic or abdominal lymphadenopathy. Atherosclerotic calcification of the aorta and iliac arteries. No suspicious bony lesions.

Case Discussion

This case demonstrates proven melanoma metastases to:

  • lung
  • liver
  • right ureter (likely)

Incidental findings include:

  • left ovarian cyst (possible neoplastic in this age group)
  • simple renal cysts (likely)
  • sigmoid diverticular disease
  • hyperdense bladder wall - may be due to contrast mixing
  • right adrenal lesion (metastases vs. adenoma)

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