[Pneumatocele caused by ballistic injury of the anterior stage of the skull base, a case report]. / Pneumatocèle par traumatisme balistique de l'étage antérieur de la base du crâne, à propos d'un cas.

The authors present a case of intracerebral expansive pneumatocele following a ethmoido-sphenoidal fracture by a bullet. The case presented is exceptional, as the bullet went through the brain case without injuring the neurological structure. The patient is operated on through the low paralateronasal approach, by filling the ethmoid and the sphenoid with autologous bone material. This surgical treatment makes closure of the fistula and disappearance of the pneumatocele possible, however, not enough time has gone by for making other judgments. This approach, which has a much lower morbidity rate than the approach of the anterior stage through craniectomy, is effective for fractures of the sphenoid and the posterior ethmoid.

Nonresident macrophages are absent from glomeruli in IgA nephropathy.

The presence of nonresident cells of monocyte-macrophage lineage was investigated in 50 renal biopsies, including 20 from patients suffering from IgA nephropathy. Histochemical and immunological techniques were used to identify, respectively, nonspecific esterase and peroxidase activities and HLA class II molecules. Although intraglomerular phagocytes were observed in all control biopsies, small numbers were seen in only two samples from patients with IgA nephropathy. This feature is consistent with an impaired clearance of immune complexes, possibly leading to their deposition in the mesangium.

[Meningeal hemorrhage, a symptom disclosing spinal tumor in children]. / Hémorragie méningée, symptôme révélateur d'une tumeur spinale chez l'enfant.

One case of subarachnoid haemorrhage due to a spinal cord tumor, seen in a child, is reported. This exceptional etiology, whose the look is often misleading must be called to mind when meningeal and rachidian syndromes are associated. Ependymoma of cauda equina is the most common tumor.