PMC6920292_01
Serial sections of right testis shows diffusely infiltrate of monotonous neoplastic cells, having large nuclei and moderate cytoplasm.
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Subsequently, pathologic examination showed malignant lymphoma (Fig. 1) with positive for leukocyte common antigen and CD20 antigen, 90% of Ki-67 antigen expression, but negative for CD3 antigen.
Axial view of contrasted abdominal CT showed irregular hypodense lesion at the tail of pancreas (red arrow).
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During the metastasis work up, the incidental finding is a 4.3 x 1.3 cm irregular, hypodense lesion at the tail of the pancreas was discovered unexpectedly (Fig. 2). Due to the patient was symptom-free, nonfunctional PNET or pancreatic adenocarcinoma was then suspected.
Serial section of tail of pancreas shows multiple clusters and groups of neoplastic cells, having insular formation and infiltrate in the pancreatic parenchymal tissue. Immunohistochemical studies showed tumor cells reactive for neuron-specific enolase and synaptophysin, but non-reactive for CK7 and CK19 antigen.
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Immunohistochemical studies showed tumor cells reactive for neuron-specific enolase and synaptophysin, but non-reactive for CK7 and CK19 antigen (Fig. 3).
Axial view of contrasted CT showed heterogenous irregular dense mass at anterior wall of hypopharynx with extension anterior to both arytenoid cartilage, posterior commissure, posterior aspect of true vocal cords, subglottic, and pyriform sinuses (red arrow).
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CT scan revealed heterogeneous, irregular dense mass at the anterior wall of hypopharynx with anterior extension to both arytenoid cartilages, posterior commissure, posterior aspect of true vocal cords, subglottis, and pyriform sinuses (Fig. 4).