Figure 2. Metastases presenting as scalp masses 3 years post-surgery. (A) Two approximate 1.5 × 1.5-cm erythematous polypoid masses (arrows) in the right frontal and left parietal scalp are observed. (B) Contrast-enhanced chest CT image shows peripheral rim-enhancing mass (arrowheads) with a central necrotic portion in the apical segment of the right upper lobe. Video-assisted thoracic surgery for the lung mass revealed metastasis of malignant phyllodes tumor of the breast. ¹⁸F-FDG PET-CT was performed for systemic evaluation. (C) Maximum intensity projection reconstruction of a PET image shows additional avid FDG uptake in the left kidney (arrow); no detectable tumoral uptake in other organs is observed.

CT = computed tomography; ¹⁸F = fluorine-18; FDG = fluorodeoxyglucose; PET = positron emission tomography.