Article Figures & Data
Figures
- Figure 1.
Contrast-enhanced magnetic resonance imaging of the parotid gland. (A) Axial; (B): coronal. A high-signal area with a maximum diameter of 10 mm on T2-weighted images is observed in the deep lobe of the left parotid gland, with a contrast effect at the margins (yellow arrow). The tumor extends into the parapharyngeal space.
- Figure 2.
CT-guided fine needle aspiration cytology. (A) The location of the tumor and bone was confirmed using a commercially available skull model. In this model, the position of the tumor was represented with clay, providing a simplified but effective depiction of the tumor's precise anatomical relationship. (B) Contrast-enhanced MRI confirms the location of the superficial temporal artery, posterior mandibular vein, and the main stem of the facial nerve. (C) The puncture route is anterior to the foramen magnum and posterior to the posterior mandibular vein. The mandibular head is used as the meridian, and the puncture is obliquely upward at a level below the mandibular head and below the external auditory canal. The puncture needle is advanced to reach the tumor while obtaining CT images in real-time. CT: Computed tomography. MRI: Magnetic resonance imaging.
- Figure 3.
Cytology (Papanicolaou staining). The cellular mass shows a cribriform structure and mucinous balls, and adenoid cystic carcinoma was diagnosed.
- Figure 4.
Postoperative histopathology (Hematoxylin and eosin staining). A cribriform pattern is observed, with mild vascular and perineural invasion. A diagnosis of adenoid cystic carcinoma (cribriform type) is made. (A) Magnification 20×; (B) magnification 100×.
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