Radiation Therapy for Maxillary Sinus Epithelioid Hemangioendothelioma: A Case Report and Literature Review

Figures

• 

  Figure 1. Right maxillary process and nasal cavity was seen protruding into the nasal septum (before the resection)

• 

  Figure 2. The CT showed a heterogeneous tumor measuring 46x40x30 mm containing an area of necrosis and extending across the nasal septum toward the contralateral side (three months after the resection).

• 

  Figure 3. A histological section stained with H&E showed a proliferation of tumor endothelial cells with epithelioid morphology, arranged in clusters and cords within a myxoid stroma. The cells exhibited abundant eosinophilic cytoplasm and rounded nuclei. The presence of rudimentary vascular lumina or intracytoplasmic vacuoles was suggestive of vascular differentiation.

• 

  Figure 4. Radiation plan for the tumor (66 Gy)

• 

  Figure 5. Radiation plan for the neck (56 Gy)

• 

  Figure 6. Facial MRI revealed a tumoral process centered on the right maxillary sinus, with locoregional infiltration, in relation to a residual focus.