Primary Yolk Sac Tumor of the Liver: A Rare Cause of Bile Duct Obstruction

Figure 1

Lymph node fine needle biopsy results. (a) Positive staining for cytokeratin 7 (4x). (b) Positive staining for alpha fetoprotein (AFP) (10x). (c) Positive staining for glypican-3 (20x). (d) Positive staining for sal-like protein 4 (SALL4) (20x).

(a)

(b)

(c)

(d)