Demographics aspects of brain and spine metastatic melanoma. Retrospective analysis in a single third-level center.

Background: Melanoma metastases to the CNS rank third in frequency, just after lung and breast metastases. There is controversy regarding the factors predisposing to developing CNS metastases in patients with cutaneous melanoma and their survival with conventional treatments.

Methods: We carried out a retrospective analysis in a third-level hospital in Mexico to determine epidemiological aspects of melanoma metastases to the central nervous system, factors related to its appearance, clinical presentation, and survival in three treatment groups: surgery, radiotherapy, and conservative management.

360-surgery for a giant cervical chordoma with involvement of the right vertebral artery.

Background: Chordomas are malignant tumors that arise from the remnants of the notochord. Complete radical resection with postoperative radiation therapy is currently considered the gold standard. Here, we performed a 360-staged approach to manage a C3-C4 chordoma that involved the right vertebral artery.

Histopathological Correlation (World Health Organization Classification) of Meningiomas and Their Anatomical Localization: A Multicenter Epidemiological Study in Mexico.

Objective: To determine the epidemiology of the localization and histological type of meningiomas in the Mexican population and the distribution of the different histological patterns and their relationship to tumor localization and patient demographics.

Methods: A retrospective analysis was performed in 5 hospitals in Mexico from 2009 to 2019. For qualitative variables, mean values were compared using Pearson χ test for the correlation between location and histological pattern as well as the clinical presentation and the patient's sex.

Spinal drop of atypical choroid plexus papilloma in an adult patient: A case report and literature review.

Background: Choroid plexus papillomas (CPPs) are benign extra-axial tumors that originate from the choroid plexus; these tumors rarely have metastases, being at the spinal level the location with few reported cases.

Case Description: We report the case of a 48-year-old man with a history of atypical fourth ventricular CPP and gross total resection (GTR) in 2008. In 2015, he presented with radicular pain, decreased strength, and paresthesia in the left leg.

Brown tumor of the cervical spine in a patient with secondary hyperparathyroidism: A case report.

Introduction: Brown tumors are non-neoplastic, expansive bone lesions that occur only in the setting of hyperparathyroidism. The most usual localization of brown tumors is in mandible, ribs and large bones. In cervical spine, to date, there are only 11 cases reported.

Anaplasic astrocytoma with exophytic growth in Sylvian fissure in a pediatric patient: a case report.

Gliomas are the most frequent supratentorial intracranial tumors in the pediatric population. Usually, they are intra-axial lesions with a characteristic image pattern, however, there are few reported cases of gliomas with exophytic growth. There are no previous reports in the literature of gliomas with exophytic growth in the Sylvian fissure.

Malignant nerve sheath tumor involving glossopharyngeal, vagus and spinal nerve with intracranial-extracranial extension and systemic metastases in a patient with type 1 neurofibromatosis: A case report.

Introduction: Intracranial malignant peripheral nerve sheath tumors are an extremely rare pathology with a high morbidity and mortality. Epidemiological, clinical and prognostic data are scarce and with little certainty in the literature. The aim of this paper is to report for first time in English literature, the case of a patient with type 1 neurofibromatosis, who presented a malignant peripheral nerve sheath tumor that involved the left glossopharyngeal, vagus and spinal nerves with intracranial and extracranial extension through jugular foramen and systemic metastases.

[The Mexican Board of Pathology: microscopy examination before and after digital microscopy].

Introduction: The examination carried out by the COMMAP for the certification process assessed pathologist formed in dissimilar institutions. In 2007 COMMAP’s governing body in turn, decided to digitize it. The purpose of this study is to investigate whether the conversion to virtual slides in the microscopy section, compared with the traditional have had an impact on the scores of the candidates.

[Ectopic sebaceous glands in the esophagus. Report of three cases].

Sebaceous glands typically are located in the pilosebaceous unit located in the superficial layers of the skin. Thus, ectopic sebaceous glands in the esophagus are a very unusual condition. Since 1962 when De la Pava and Pickren described that sebaceous glands could be ectopically located in the esophagus, no more than 30 cases have been reported in the literature.

[Isolated renal mucormicosis].

Mucormycosis is an infection caused by a class Zygomycetes fungi. The rhinocerebral and pulmonary are the most common clinical presentations. Renal mucormycosis is a very rare form.