Figure 3. (A) Histopathological examination of the biopsy specimen showing melanoma cells containing melanin granules (H&E stain, ×200). (B) Histopathological features of "nesting" of melanoma cells just beneath the bronchial epithelium (H&E stain, ×400). (C) The melanoma cells are round or spindle shaped with melanin pigmentation and positive for human melanoma black 45 (×200).