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M J Roca Calvo

Publications and source records attributed to M J Roca Calvo.

6 recordsLinked to original sources
PubMed2002

[Ventriculopleural shunt to treat hydrocephalus].

INTRODUCTION: Ventriculoatrial and ventriculopleural shunts (VPS) are alternatives to ventriculoperitoneal shunts for draining cerebrospinal fluid from patients with hydrocephalus. VPS has seldom been used because of the risk of respiratory insufficiency due to pneumothorax or pleural effusion. However, valves are currently available with anti-siphon devices for use with standard shunting systems to prevent the development of pleural effusion. The aim of this study was to analyze outcome after VPS in eight patients in whom we used the new valves for avoiding overdrainage of cerebrospinal fluid. MATERIAL AND METHOD: Nine VPS procedures were performed in eight hydrocephalic patients between 1988 and 2000. We used differential pressure valves in eight procedures and a flow regulator valve in one. The externally adjustable Sophy valve was used in six cases. The indication for VPS was peritoneal adhesions in four cases, persistent ascites in two, ventriculoatrial valve obstruction in one, and infection of the peritoneal shunt (peritonitis) in one. The ninth case involved replacement of a previously obstructed valve. RESULTS: After a follow-up period of 22 months all shunts were functioning well and the only patient with symptoms of hydrocephalus was the one who required valve replacement at six months. No surgical morbidity or mortality was observed, and only one patient developed transitory signs of excessive cerebrospinal fluid drainage, which was corrected by regulating the magnetic valve gradient. The death of one patient 36 months after surgery was unrelated to pleural drainage. CONCLUSIONS: Valves newly designed to prevent overdrainage of cerebrospinal fluid give satisfactory results, such that VPS should be considered as an alternative to peritoneal drainage.

Adolescent↗
PubMed1999

[Solitary fibrous tumors of the pleura].

Seven cases of solitary fibrous tumours of the pleura are here reported, formerly named benign fibrous mesotheliomas. Histologically, these tumours are formed by fusiform cells with a minimal cellular pleomorphism and absence of mitosis. These tumours cause scarce symptoms which are usually diagnosed as a casual finding when a chest X-ray is performed on account of other cause. Treatment should be surgical, with removal of all tumoral mass, thus avoiding its growth and the possibility of the reported degeneration towards malignancy.

Adult↗
PubMed1993

[Mediastinal fibrosis].

Even tough the ultimate etiologic and pathogenic mechanisms of mediastinal fibrosis are not quite established, several causes have been mentioned as the more frequent inducers, such as histoplasmosis, tuberculosis and other granulomatous diseases. Generally the diagnosis is suggested by a hilar or mediastinal mass, which is seen in thorax radiography, because 40% of patients are asymptomatic. Exeresis of fibrotic Magma is difficult because usually there is no separation with trachea neither with superior cava vein. That is why many times we have to restricted ourselves to the surgical approach on the complications. The present work discusses three new cases of mediastinal fibrosis.

Adult↗