Browsing by Author "Garcia-Corrochano, Pamela"

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    Distribution of tumor-infiltrating immune cells in glioblastoma
    (Future Medicine Ltd., 2018) Orrego Puelles, Enrique,; Castaneda, Carlos A; Castillo, Miluska; Bernabe, LA; Casavilca, Sandro; Chakravarti, A; Meng, W; Garcia-Corrochano, Pamela; Villa-Robles, MR; Zevallos, R; Mejia, O; Deza, Pedro; Belmar-Lopez; Ojeda, CL
    Aim: Evaluation of features related to infiltrating immune cell level in glioblastoma. Methods: Tumor-infiltrating lymphocytes (TILs) through H&E staining, and TILs (CD3, CD4, CD8 and CD20) and macrophage (CD68 and CD163) levels through immunohistochemistry were evaluated through digital analysis. Results: CD68 (9.1%), CD163 (2.2%), CD3 (1.6%) and CD8 (1.6%) had the highest density. Higher CD4+ was associated with unmethylated MGMT (p = 0.016). Higher CD8+ was associated with larger tumoral size (p = 0.027). Higher CD163+ was associated with higher age (p = 0.044) and recursive partitioning analysis = 4. Women (p < 0.05), total resection (p < 0.05), MGMT-methylation (p < 0.001), radiotherapy (p < 0.001), chemotherapy (p < 0.001) and lower CD4+ (p < 0.05) were associated with longer overall survival. Conclusion: Macrophages are more frequent than TILs. Some subsets are associated with clinical features.
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    Glioblastoma of pineal region: report of four cases and literature review
    (Future Medicine Ltd., 2017) Orrego Puelles, Enrique; Casavilca Sambrano, Sandro; Garcia-Corrochano, Pamela; Rojas-Meza, S; Castillo, Miluska; Castaneda, Carlos A
    We report four cases of glioblastoma in the pineal region. The patients presented a severe headache and vomiting. Brain imaging showed a heterogeneously enhanced tumor in the pineal region with obstructive hydrocephalus. Case 3 developed a subependymal dissemination. The patient went to ventricular-peritoneal shunt and subtotal or total resection and radiotherapy with/without chemotherapy. Cases 1 and 2 received radiation and died 8 and 11 later months. Cases 3 and 4 completed radiotherapy and chemotherapy, and survived 28 and 31 months after the initial diagnosis. Glioblastoma in the pineal region carry a poor prognosis and require neurooncology teams.