Parotid mammary analogue secretory carcinoma: A case report and review of literature

Figure 1 Radiological results for the lesion. A: Ultrasonic examination showing a clear boundary with strong echoes of strips and dots (arrows); B: Magnetic resonance imaging results for the lesion showing iso-low signals for T1; C: High signals for the T2 fat compression.

Figure 2 Clinical and histological examinations of the tumor tissues. A: A section of the tumor, showing a solid, brownish red, cystic, mass with yellowish green liquid; B: The histological examination of the lesion showing the cystic components, areas of the cyst wall epithelium, and papillary hyperplasia to the cyst cavity (indicated using black arrows).

Figure 3 Immunohistochemical staining (×40). A: Immunostaining for S-100; B: Immunostaining for Mammaglobin; C: Immunostaining for Cytokeratin (CK) 5/6; D: Immunostaining for CK7; E: CK8 (+); F: Vimentin (+); G: Immunostaining for Smooth Muscle Actin.

Figure 4 Immunohistochemical staining (×40). A: Immunostaining for scattered P63; B: Immunostaining for discovered on Gastrointestinal Stromal tumor-1; C: Immunostaining for Calponin; D: Immunostaining for Ki-67.

Figure 5 Surgical management of the patient. A: Design of incision before total lobectomy of the right parotid gland; B: Total lobectomy of the right parotid gland and preservation of facial nerve; C: Implantation of a biological patch to restore the sunken deformity and prevent Frey’s syndrome.