ABSTRACT
Objective To investigate the clinicopathologic features of intestinal polypoid lymphoma (PL) in children. Methods The clinicopathologic data of 15 cases of pediatric intestinal PL in Jiangxi Provincial Children 's Hospital were retrospectively analyzed. Immuohistochemistry was used to detect the expressions of CD10, bcl-6, bcl-2, MUMl and ERCC1, then EB virus (EBV)-encoded RNA (EBER) status was tested by using in situ hybridization. Results Amongst 15 cases studied, 13 cases were Burkitt lymphoma (BL), 1 case was diffuse large B-cell lymphoma (DLBCL) and 1 case was between DLBCL and BL (DLBCL/BL). The positive rate of CD10, bcl-6, bcl-2, MUMl, ERCC1 and EBER were 100.0%(13/13), 92.3%(12/13), 0, 7.7 % (1/13), 15.4 % (2/13), 53.8 % (7/13), respectively in 13 BL cases. The clinical stage of 13 patients with BL: 11 cases (84.6 %) Ⅱ stage, 1 case (7.7 %) Ⅲ stage, 1 case (7.7 %) Ⅳstage. The clinical stage of DLBCL and BL/DLBCL: Ⅱstage. 14 cases of PL had survival time without tumors, 24-120 months follow-up, and 1 BL patient inⅣstage without chemotherapy died after 2 months. Conclusion BL is a major subtype of intestinal PL in children, which shows a low clinical stage and a good prognosis.
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the clinicopathologic features and differential diagnoses of non-involuting congenital hemangioma (NICH) in children.</p><p><b>METHODS</b>The clinical, morphologic and immunophenotypic characteristics of 22 cases of NICH were retrospectively analyzed.</p><p><b>RESULTS</b>The mean patients' age at diagnosis was 4.2 years, with a male to female ratio of 1.75:1. The tumors were located in the head and face (5 cases), neck (3 cases), body (6 cases), upper limbs (5 cases), and lower limbs (3 cases). Histologically, the tumor was dominated by rather large lobules of small vessels that were mostly rounded, curved, small and thin-walled, and were lined by endothelial cells surrounded by one or more layers of pericytes. The center of the lobules was occupied by one or more thin or thick walled vessels, which were surrounded by fibrous and fatty tissue, which contained abnormal arterial and venous structures. At the edge of the lobules there were lymphatic vessels. Immunohsitochemical study showed that tumor cells in NICH were positive for CD34 (22/22), CD31 (22/22), SMA (22/22), vimentin (22/22) and Glut1 (0/22). D2-40 expression was located at the edge of the capillary lobules.</p><p><b>CONCLUSIONS</b>NICH is a benign lesion. Clinically and pathologically, it needs to be differentiated from rapidly involuting congenital hemangioma, infantile hemangiomas, tufted angioma, vascular malformation, and others.</p>