Remission of primary low-grade gastric lymphomas of the mucosa-associated lymphoid tissue type in immunocompromised pediatric patients

Figure 1 Mucosa-associated lymphoid tissue lymphoma in Patient 1. A: A polypoid lesion on the posterior wall of the lower corpus of the stomach, suggesting the existence of lymphoproliferative disease; B: The histological features show characteristic appearance of low-grade gastric lymphomas of the mucosa-associated lymphoid tissue type with a diffuse infiltrate of centrocyte-like cells and the formation of lymphoepithelial lesions (H & E, original magnification x10).

Figure 2 Gallium scintigraphy in Patient 1 shows an abnormal accumulation of the nuclide in the para-aortic lymph nodes.

Figure 3 Twenty-four months later, an area of partly whitish rugged mucosa appeared at the site previously occupied by the mucosa-associated lymphoid tissue lymphoma in Patient 1.

Figure 4 Mucosa-associated lymphoid tissue lymphoma in Patient 2. A: An ulcerated lesion on the anterior wall of the upper corpus before eradication; B: The histological features show the appearance of low-grade gastric lymphomas of the mucosa-associated lymphoid tissue type similar to that found in Patient 1 (H & E, original magnification x10).

Figure 5 Two months after eradication therapy in Patient 2, an area of glossy whitish mucosa appeared at the site previously occupied by the low-grade gastric lymphoma of the mucosa-associated lymphoid tissue type.