Read about diagnosis of periventricular leucomalacia (PVL). HUS (head ultrasounds) are required to confirm diagnosis of PVL in a premature baby.
Key points
Periventricular leucomalacia (PVL) is a condition in which decreased blood flow to brain tissue causes it to soften up and eventually die, leaving behind cysts, or holes, filled with fluid.
Cysts may take several weeks to appear, so a head ultrasound (HUS) is performed regularly to confirm diagnosis.
Periventricular leucomalacia (PVL) in a premature baby is diagnosed with a head ultrasound (HUS), which is performed regularly to look for cysts, if brain tissue damage occurred before or during birth.
Periventricular leucomalacia (PVL) is a condition in which decreased blood flow to brain tissue causes it to soften up and eventually die, leaving behind cysts, or holes, filled with fluid. Over time, these cysts may fuse together and enlarge or collapse. The affected brain tissue and the nerve fibres that run through it help to control body movement, and their loss most often affects this ability.
Although the brain tissue damage may have occurred before birth, during delivery, or in the immediate days following birth, the cysts may take several weeks to appear, delaying a definitive diagnosis. Head ultrasound (HUS) is performed regularly to confirm diagnosis. If cysts are detected, they may appear to resolve themselves over the course of a month or more, but the longer-term damage from PVL will likely not appear until months later. Generally speaking, damage from PVL affects motor control and may lead to a diagnosis of cerebral palsy.