Laparoscopic subtotal gastrectomy in morbid obese patients: a valid option to laparoscopic gastric bypass in particular circumstances (prospective study).

Background: Laparoscopic Roux-en-Y Gastric Bypass (LRYGB) without resection of the distal stomach is largely performed over the world for morbid obesity. Potential risk of gastric remnant carcinoma development has been suggested.

Purpose: To present the results obtained after LRYGB with resection of distal stomach.

Fluorescence guided resection with 5-aminolevulinic acid of a pilomyxoid astrocytoma of the third ventricle.

Fluorescence-guided resection with 5-aminolevulinic acid has been shown to be useful in the resection of certain brain tumors other than high grade gliomas, facilitating the intraoperative differentiation of neoplastic tissue. The technique enables the surgeon to ensure that no tumor fragments remain, thereby achieving higher rates of complete resection. Tihan first described pilomyxoid astrocytomas in 1999.

Fluorescence-guided resection with 5-aminolevulinic Acid of subependymomas of the fourth ventricle: report of 2 cases: technical case report.

Background And Importance: The usefulness of 5-aminolevulinic acid (5-ALA) for resection of malignant astrocytomas has been established in recent years. In addition to these tumors, it has been reported that 5-ALA fluorescence could be elicited in other tumors such as intracranial and spinal meningiomas or posterior fossa and spinal cord ependymomas, resulting in improved resections. Here, we present 2 cases of subependymomas of the fourth ventricle that showed intense fluorescence after 5-ALA administration.

Fluorescence-guided resection with 5-aminolevulinic acid of meningeal sarcoma in a child.

Background: The usefulness of fluorescence-guided resection with 5-aminolevulinic acid for malignant brain gliomas was demonstrated by Stummer. However, there are several articles in the literature showing the usefulness of the technique for other types of tumors, including benign tumors, such as ependymomas or meningiomas. Meningeal sarcomas are rare, highly aggressive malignant tumors, predominately affecting the pediatric population and have a poor prognosis in spite of treatment.

[Primary osteolytic intraosseous meningioma of the occipital bone].

Primary intraosseous meningiomas are considered extradural meningiomas when no dural attachment is present. Most of them arise from the cranial bones and can present either as an osteoblastic or an osteolytic lesion. Osteolytic intraosseous meningiomas are the rarest and very few cases have been reported.