Fig. 3From: Recurrence of a neuroendocrine tumor of adrenal origin: a case report with more than a decade follow-upHistopathology of lung nodule biopsy: a small monotonous epithelial cells, without atypia or mitotic activity (H&E staining, magnification × 100); b strong positive staining of tumor cells for ACTH (magnification × 100)Back to article page