Sebaceous lymphadenocarcinoma of the parotid gland: A case report

Figure 1 Enhanced computed tomography and magnetic resonance imaging indicated a possible malignant tumor in the right parotid gland, with involvement of adjacent skin and potential lymph node metastases. A: An approximately 28 mm × 21 mm irregular mass shadow was seen at the lower pole of the right parotid gland; B: Unclear boundaries; C: Obviously inhomogeneous enhancement; D: Thickened and enhanced adjacent skin, and multiple lymph node shadows in the right parotid gland and the right II, V regions; E: A clinical photo that shows the pre-operative appearance of the tumor.

Figure 2 Gross pathology of 5 cm × 4 cm × 4 cm specimen of parotid tissue. A: Greyish-red, irregular parotid tissue, with a 3.5 cm × 1 cm segment of attached skin tissue; B: A 3 cm × 2 cm × 1.5 cm, grayish-yellow nodule.

Figure 3 Hematoxylin and eosin staining and microscopic examination revealed a large number of lymphocytes and tumor cells with nest-like and lamellar infiltrative growth. The tumor cells were rich in transparent to eosinophilic cytoplasm, with hyperchromatic nuclei and heterotypic and pathological nuclear division. A: × 100 magnification; B: × 200 magnification; C: × 400 magnification.