Technical position on milk and its derivatives in adult health and disease from the Asociación Mexicana de Gastroenterología and the Asociación Mexicana de Gerontología y Geriatría.

Milk is a liquid food that possesses an important quantity of highly bioavailable macronutrients. In addition, it is readily accessible, as well as relatively inexpensive. Given that the knowledge of physicians about nutrition and food composition is deficient, in general, many of the dietary interventions recommended in diverse clinical settings lack a scientific basis.

[Neurinomas of the cauda equina as a cause of lumbar sciatica].

The clinical and radiological characteristics together with the therapeutic results in 12 cases of Cauda Equina neurinomas are analyzed. In a high percentage of cases, Cauda Equina neurinomas manifest initially as a simple lumbar sciatic syndrome, frequently not different from those caused by other more common pathologies such as lumbar discal hernia. This article discusses the possible diagnostic problems encountered with the most common currently used radiologic procedures in this type of lesions such as CT scan, myelography and NMR.

[Specific receptors for sex hormones in tumors of the central nervous system].

The hormone sensitivity of some tumors seems to be mediated by the presence of specific receptor proteins, and a correlation seems to exist between the amount of receptor molecules and the behavior of the tumor evolution. Epidemiological data suggest a relation between the steroid sexual hormones and the development of some tumors of the central nervous system (CNS). The authors determine the amount of receptors specific to 17-beta-estradiol and progesterone in several cases of meningioma, glioma, neurinoma and intracerebral metastases.