Malignant fibrous histiocytoma of the lung.

Primary malignant fibrous histiocytoma (MFH) of the lung is very rare. To date, only 32 reports of 63 cases of primary MFH of the lung have appeared in English, excluding tumors arising from the pulmonary arteries and pleura. We describe a patient with primary MFH of the lung who developed brain metastasis and involvement of pulmonary great vessels. In addition, we reviewed previously reported cases to establish the clinical characteristics and most appropriate management of primary pulmonary MFH. When disease is sufficiently limited, complete resection remains the mainstay of treatment.

Comparison of sprotte and Quincke needles with respect to spinal fluid leakage using artificial spinal cord.

PURPOSE: This research investigated whether the Sprotte needle causes less leakage of CSF than the Quincke needle in the artificial spinal cord. METHODS: The changes in intradural pressure, extradural pressure, and leaked volume of CSF were evaluated following puncture with Sprotte and Quincke needles in the artificial spinal cord. RESULTS: The decrease in intradural pressure was 9.7±1.8 mm H2O with the Sprotte needle and 20.5±2.7 mm H2O with the Quincke needle (P<0.05). The volume of leakage of artificial CSF was 2.0±0.3 ml with the Sprotte needle and 3.3 ±0.3 ml with the Quincke needle (P<0.01). The extradural pressure increase was 166.1±8.2 mm H2O with the Sprotte needle and 186.8±13.2 mm H2O with the Quincke needle (P<0.05). CONCLUSION: The Sprotte needle produces less CSF leakage than the Quincke needle.