case_images: PMC7192282_01
case_images: The first ACC arising in the left parotid gland. A solid-nodular growth pattern of the neoplastic epithelium. The tumor cell population resembles normal serous acinar salivary gland cells (hematoxylin & eosin, 40x).
case_images: MBSEH-53-306-g001.jpg
case_images: PMC7192282_01_MBSEH-53-306-g001.jpg
case_images: F1
case_images: Histology of the resected tumor confirmed a low-grade ACC with the neoplastic cell population predominantly arranged in solid-lobular pattern and surrounded by a dense lymphoid stroma containing the lymphoid follicles (Fig. 1).
case_images: PAS staining (the case presented in Figure 1). A multilobular microarchitecture of tumor tissue. The eosinophilic material in the cytoplasm of the neoplastic cells shows a strong purple color (20x).
case_images: MBSEH-53-306-g002.jpg
case_images: PMC7192282_01_MBSEH-53-306-g002.jpg
case_images: F2
case_images: Tumor cells contained PAS (Periodic Acid-Schiff) positive (Fig. 2) and diastase-resistant intracytoplasmic granules.
case_images: The second ACC arising in the right parotid gland. The tumor has the same microscopic appearanceas in the previous case (hematoxylin & eosin, 100x).
case_images: MBSEH-53-306-g003.jpg
case_images: PMC7192282_01_MBSEH-53-306-g003.jpg
case_images: F3
case_images: Histology confirmed a low-grade ACC showing the same picture as it was found in the left parotid gland (Fig. 3).
case_images: PAS diastase staining (the case presented in Figure 3). Purple color of the neoplastic cells does persist after digestion with a diastase (100x).
case_images: MBSEH-53-306-g004.jpg
case_images: PMC7192282_01_MBSEH-53-306-g004.jpg
case_images: F4
case_images: Neoplastic cells contained abundant PAS-positive, diastase-resistant cytoplasmic granules (Fig. 4).