OBJECTIVEDespite the technological advancements of neurosurgery, the posterior part of the third ventricle has always been the “dark side” of the ventricle. However, flexible endoscopy offers the opportunity for a direct, in vivo inspection and detailed description of the posterior third ventricle in physiological and pathological conditions. The purposes of this study were to describe the posterior wall of the third ventricle, detailing its normal anatomy and surgical landmarks, and to assess the effect of chronic hydrocephalus on the anatomy of this hidden region.METHODSThe authors reviewed the video recordings of 59 in vivo endoscopic explorations of the posterior third ventricle to describe every identifiable anatomical landmark. Patients were divided into 2 groups based on the absence or presence of a chronic dilation of the third ventricle. The first group provided the basis for the description of normal anatomy.RESULTSThe following anatomical structures were identified in all cases: adytum of the cerebral aqueduct, posterior commissure, pineal recess, habenular commissure, and suprapineal recess. Comparing the 2 groups of patients, the authors were able to detect significant variations in the shape of the adytum of the cerebral aqueduct and in the thickness of the habenular and posterior commissures. Exploration with sodium fluorescein excluded the presence of any fluorescent area in the posterior third ventricle, other than the subependymal vascular network.CONCLUSIONSThe use of a flexible scope allows the complete inspection of the posterior third ventricle. The anatomical variations caused by chronic hydrocephalus might be clinically relevant, in light of the commissure functions.

Summary The scoping review investigated how digital technologies have helped to increase cancer screening uptake in communities including adolescents, adults and elderly people during the COVID-19 outbreak between January 2020 and June 2021. Thirteen studies were identified as being relevant, mostly addressing underserved or minority communities with the purpose to increase screening uptake, delivering health education or investigating social and cultural barriers to cancer screening. The interventions effectively used digital technologies such as mobile apps and messengers mobile apps, messaging and Web platforms. The limitations imposed by COVID-19 on social interaction can be supported with digital solutions to ensure the continuity of cancer screening programs. However, more research is needed to clarify the exact nature of effectiveness, especially in large-scale interventions.