Review of the diagnosis of gastrointestinal lanthanum deposition

Figure 4 Typical endoscopic features of gastric lanthanum deposition during conventional white-light (upper row) and magnified observation with narrow-band imaging (lower row). A, B: “Whitish spot” is defined as a whitish lesion ≤ 20 mm in diameter with a uniform white color; C, D: “Annular whitish mucosa” are lesion (s) ≤ 20 mm in diameter with white color in the periphery; E, F: “Diffuse whitish mucosa” appears with a white area > 20 mm in diameter; G, H: “Fine granular whitish deposition” is a tiny or faint whitish lesion (s) ≤ 1 mm in diameter.