case_images: PMC11632163_01
case_images: Adenosquamous carcinoma arising in bronchogenic cyst. (A) Imaging: CT scans reveal a large lesion with both cystic and solid parts (arrow), and calcifications at the transition point (arrowhead). (B-G) Fine-needle aspiration. Upper Panel: Adenocarcinoma: The Diff-Quick stain (B) displays cells with uniform nuclei and ample cytoplasm, including a cell with a large mucus vacuole. The cell block (C) depicts malignant glands with intracellular mucus, highlighted by the mucicarmine stain (D). Lower Panel: Squamous cell carcinoma: The Pap stain (E) shows prominent intercellular bridges (arrowheads). The cell block (F) contains keratinizing malignant cells that are positive for the P40 immunostain (G). (All images, 400x).
case_images: CYT-36-75-g002.jpg
case_images: PMC11632163_01_CYT-36-75-g002.jpg
case_images: cyt13446-fig-0001
case_images: Diagnostic workup revealed enlargement of her IPBC and development of a solid component with calcifications, worrisome for malignancy (Figure 1A).