[Osseous orbitotomies using a coronal flap: a retrospective study of 87 intraorbital lesions]. / Orbitotomías óseas mediante abordaje coronal: estudio retrospectivo de 87 lesiones intraorbitarias.

OBJECTIVE: To present our experience in 80 patients with intraorbital tumours and lesions who underwent 87 osseous orbitotomies with coronal incision during a 12 year period. MATERIAL, METHODS AND RESULTS: Hemangioma was the most frequent histologic diagnosis, being the intraconical retrobulbar compartment the most common location. Bilateral presentation of lesions occurred in 7 patients. Lateral and supero-lateral orbitotomies were preferably applied (87.35%). In 90.80% of cases some kind of osteosynthesis was employed, 51.75% with bio-resorbable plates. Intraoperative exposure or dura mater breakage occurred in 10 patients. 45 transitory and 21 permanent postoperative complications were seen, being the nervous ones (diplopia and ptosis) the most frequent. Most of these were spontaneously solved in a short time period. 15 patients required multi-disciplinary collaboration with neurosurgery. CONCLUSIONS: Coronal incision allows any bone orbitotomy, with security, guarantee and good aesthetic and functional results. Lateral and supero-lateral orbitotomies provide an ideal extradural approach to the retrobulbar compartment. An approach to the apex, orbital channel and medial compartment to the optic nerve, usually requires a combined neurosurgical approach through anterior cranial fossa. Orbitotomy fixation with bio-resorbable ostheosynthesis is an alternative to titanium plates. They can even be a first choice in paediatric age. The morbidity of this surgical technique is low.

[Cerebral hydatidosis. Analysis of a series of 23 cases]. / Hidatidosis cerebral. Análisis de una serie de 23 casos.

BACKGROUND: The aim of the present study was to contribute to the knowledge of cerebral hydatidosis so as to improve the prognosis of a benign condition with a malignant behavior, as it has a high relapse rate with a high morbidity. METHODS: A retrospective study of cerebral hydatidosis has been carried out in 23 patients, seen at the University Hospital Virgen del Rocío during the last 20 years. The following variables were recorded: 1) Sex and age at presentation; 2) epidemiological data; 3) number, size, localization and rate of growth of cysts; 4) latency period; 5) clinical features; 6) yield of imaging procedures; 7) surgical approaches and medical therapy; and 8) relapses and sequelae. A comparative study was made of patients aged 14 years or less and those above this age. RESULTS: The mean age of the patients was 15.1 +/- 10.3 years (65% were younger than 14 years). 24% were males. 65% came from Extremadura and 74% had a rural background. The latency period was 7.9 +/- 9.2 months (range 15 days-36 months), and it was shorter in children (4.2 +/- 3.8 vs 12.6 +/- 12.7 months) (p less than 0.05). 74% had a single cyst. The cyst size was greater in children (91 +/- 46 vs 67 +/- 35 mm), as it was the rate of growth, particularly in patients younger than 10 years (13.5 +/- 7 vs 9.2 +/- 2 mm/year) (p less than 0.001). 48% had intraparenchymal localization and 70% were in the right hemisphere. In two cases the localization was intraventricular and it was cerebellar in one. Cranial computed tomography was the imaging procedure with the highest yield. The diagnosis was confirmed with pathological examination. In 6 patients (26%) the Dowling and Orlando technique (hydatid delivery) was carried out without subsequent relapses. In 7 cases (30%), and owing to surgical technique difficulties or accidents, puncture and aspiration were carried out, with 4 relapses (57%). In 10 cases cyst rupture occurred, with 6 relapses (60%). The growth rate of the relapses was 9.4 +/- 6.5 mm/month. 87% had severe sequelae, associated with relapses and multiplicity, two patients died (9%). CONCLUSIONS: 1) Cerebral hydatidosis predominates in children and young adult males of a rural background; 2) usually there is a long latency period, which is shorter in children; 3) the size and the growth rate of the cysts is greater in children; 4) computed tomography is the imaging technique with the highest yield; 5) Dowling and Orlando technique is the most effective surgical procedure; 6) the incidence of relapses is high, depending on the type of surgical approach.