Burnt out testicular tumor - A case report.

Spontaneous regression of testicular tumors known as burnt-out tumor of testis is a rare entity and is seen in about 5% of testicular germ cell tumors. It is described as a spontaneously, completely, or partially regressed testicular tumor with or without metastasis in the absence of any treatment. This entity is now included in the 2016 classification of testicular tumors.

Profile of Childhood Cancers From Hospital-Based Cancer Registries in India, 2012-19.

Objective: To describe the clinical pattern of childhood and adolescent cancers across India using hospital-based data in the National Cancer Registry Program.

Methods: Records of 60720 cancer cases in the 0-19 year age group for the period 2012-2019 from 96 hospital-based cancer registries were reviewed. Childhood cancers were classified based on the International Classification of Childhood Cancer (ICCC).

Layer-specific pain relief pathways originating from primary motor cortex.

The primary motor cortex (M1) is involved in the control of voluntary movements and is extensively mapped in this capacity. Although the M1 is implicated in modulation of pain, the underlying circuitry and causal underpinnings remain elusive. We unexpectedly unraveled a connection from the M1 to the nucleus accumbens reward circuitry through a M1 layer 6-mediodorsal thalamus pathway, which specifically suppresses negative emotional valence and associated coping behaviors in neuropathic pain.

Connectomic comparison of mouse and human cortex.

The human cerebral cortex houses 1000 times more neurons than that of the cerebral cortex of a mouse, but the possible differences in synaptic circuits between these species are still poorly understood. We used three-dimensional electron microscopy of mouse, macaque, and human cortical samples to study their cell type composition and synaptic circuit architecture. The 2.

Neuropathic pain caused by miswiring and abnormal end organ targeting.

Nerve injury leads to chronic pain and exaggerated sensitivity to gentle touch (allodynia) as well as a loss of sensation in the areas in which injured and non-injured nerves come together. The mechanisms that disambiguate these mixed and paradoxical symptoms are unknown. Here we longitudinally and non-invasively imaged genetically labelled populations of fibres that sense noxious stimuli (nociceptors) and gentle touch (low-threshold afferents) peripherally in the skin for longer than 10 months after nerve injury, while simultaneously tracking pain-related behaviour in the same mice.