INTRODUCTION The regression caudal syndrome includes a spectrum of malformations which vary from the symptomless coccygeal agenesis until thoracic vertebrae and sacrococcygeal agenesis with severe neurological deficit; it is associated sometimes with malformations in other organs and systems. We present a case of partial agenesis of sacro and coccix with neuromuscular, sphincter and orthopedist...

To determine whether resegmentation of somites forms the axial skeleton, we traced the development of the rostral and the caudal half of a somite during skeletogenesis in chick-quail chimeras by replacing the rostral or caudal half of a newly formed chick somite with that of a quail somite. The rostral half-somite transplant formed the caudal half of the vertebral body, the entire spinous proce...

Complete duplication of genitourinary system, colon and vertebral column is a very rare and complex congenital condition termed as "caudal duplication syndrome" with variable presentations. This term is often quoted as a type of incomplete separation of mono-ovular twins or conjoined twinning. It is associated with other congenital malformations of the genitourinary, gastrointestinal and other ...

Caudal regression syndrome (CRS) is a rare neural tube defect affecting terminal spinal segments and cord manifesting as neurological deficit ranging from bladder and bowel involvement to severe sensory motor deficits in lower limbs. It has sporadic appearance and maternal diabetes, genetic factors, teratogens and hypoperfusion are considered as possible etiologic factors and it can be associat...

Background: Bupivacaine provides reliable, long-lasting anesthesia and analgesia when given via the caudal route. Ropivacaine is a newer, long-acting local anesthetic that (at a concentration providing similar pain relief) has less motor nerve blockade and may have less cardiotoxicity than bupivacaine. Methods: In a double-blind trial, 81 healthy children, undergoing ambulatory surgical procedu...

A new species of the luminous roughy fish genus Aulotrachichthys is described based on a single specimen collected from northeastern Taiwan. It differs congeners in having combination characters: striated area caudal peduncle extending posteriorly, slightly beyond middle point peduncle, its length 66.7% caudal-peduncle length; black vertical line caudal-fin base; an overall dark-brown colourati...