Stereotaxic administrations of allogeneic human Vγ9Vδ2 T cells efficiently control the development of human glioblastoma brain tumors

Glioblastoma multiforme (GBM) represents the most frequent and deadliest primary brain tumor. Aggressive treatment still fails to eliminate deep brain infiltrative and highly resistant tumor cells. Human Vγ9Vδ2 T cells, the major peripheral blood γδ T cell subset, react against a wide array of tumor cells and represent attractive immune effector T cells for the design of antitumor therapies. This study aims at providing a preclinical rationale for immunotherapies in GBM based on stereotaxic administration of allogeneic human Vγ9Vδ2 T cells. The feasibility and the antitumor efficacy of stereotaxic Vγ9Vδ2 T cell injections have been investigated in orthotopic GBM mice model using selected heterogeneous and invasive primary human GBM cells. Allogeneic human Vγ9Vδ2 T cells survive and patrol for several days within the brain parenchyma following adoptive transfer and can successfully eliminate infiltrative GBM primary cells. These striking observations pave the way for optimized stereotaxic antitumor immunotherapies targeting human allogeneic Vγ9Vδ2 T cells in GBM patients.

[Ultrasound-guided fine-needle punctures of abdominal masses: cytology or histology? Comparative prospective study]

The aim of this study has been for one part to assess the obtaining of cytological and histological material from the same patients with the minimum amount of injections using a fine needle (diameter less than 1 mm) and also to evaluate the histological and cytological supply, individually and jointly in the diagnosis of abdominal tumors. Seventy lesions of which 58 hepatic have been punctured with fine needles of 20 (0.9 mm) to 22 G (0.7 mm). Material has been obtained in 98.6 per cent of cases for cytology and 54 per cent of cases for histology. Their respective sensitivity in the diagnosis of malignant tumors was 96.8 per cent and 86.8 per cent and was not improved by adjoint analysis. The specificity was 1 for cytology. The differential diagnosis in malignant hepatic tumors between hepatocarcinoma and metastasis was existent in 94.3 per cent of cases for cytology and 90 per cent for histology with no benefit coming from the association of two. In the group having hepatic metastasis without known primary cancer having found histological confirmation of the primary lesion, the cellular type has been revealed in exactitude in 94.4 per cent of cases with cytology and in 63.6 per cent with histology. No complications have been observed. The fine needle cytological aspiration ponction gives very satisfying results, comparable with regard to the diagnosis contribution to results of published studies, obtained with the use of coarse needle biopies. We suggest that fine needle ponction should be used preferentially and that coarse needle biopsy should be restricted to the few cases in which the former does not yield sufficient information.

[Cancer of the esophagus after mediastinal radiotherapy for Hodgkin's disease. Apropos of a case]

Malignant solid tumors induced by radiotherapy for Hodgkin's disease are uncommon. We report one case of thoracic esophageal squamous carcinoma diagnosed 19 years after mediastinal irradiation. The criteria usually accepted for the diagnosis of radiation cancer were all present in this case. An oesophagectomy was performed and the patient made a good recovery from the operation.