Menkes-Syndrom

Toddler who

fell. AP radiograph of the forearm shows metaphyseal widening of the distal radius and ulna.The diagnosis was Menkes disease.

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Menkes

disease • Menkes disease - Ganzer Fall bei Radiopaedia

Gupta, P. Menkes disease. Case study, Radiopaedia.org. (accessed on 01 Nov 2022) https://doi.org/10.53347/rID-18273 • CC by-nc-sa 3.0 (modified)

Apparent

diffusion coefficient restriction in the white matter: going beyond acute brain territorial ischemia. An 8-month-old child affected by Menkes disease. Axial diffusion- (a) and T2-weighted images (c) disclosed bilateral asymmetric oval bright white matter lesions in the centrum semiovalis (arrows). ADC maps (b) of the lesions showed low intensity signal

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Menkes disease, also known as trichopoliodystrophy or kinky hair kinky vessel syndrome, is an X-linked recessive disorder that results in a derangement in copper handling. It results in low copper levels and subsequently, deficiency in copper-dependent mitochondrial enzymes.

Epidemiology

Menkes kinky hair syndrome is rare, occurring in 1 case per 300,000 population.

Clinical presentation

Their hair may be fine, silvery and brittle (kinky hair) and connective tissue disturbances lead to doughy skin.

There is progressive neurologic deterioration: seizures usually begin in the first few days or months of life with progressive hypotonia and developmental delay in the first year of life.

Pathology

Genetics

Menkes disease is a multisystem disorder with an X-linked inheritance, caused by mutation of the gene ATP7A located on Xq13.3. Two-thirds of patients have a positive family history, while the other one-third of patients have spontaneous mutations.

Radiographic features

Musculoskeletal manifestations

metaphyseal widening of the femur and ribs
tibial and femoral spurs
Wormian bones

CNS manifestations

Brain manifestation of Menkes syndrome are progressive cerebral and cerebellar atrophy, elongated and tortuous intracranial vessels as well as bilateral epidural collection or bleed.

MRI

At birth, the brain often appears normal on MR images.

During the course of the disease, however, rapidly developing cerebral and cerebellar atrophy and prominent white matter changes can occur .

T1: can show hyperintensity of the basal ganglia similar to that of chronic hepatic encephalopathy
MR angiography: cerebral vessels usually are tortuous and elongated on MR angiograms

Chronic bilateral subdural hematomas also may be visualized.

Treatment and prognosis

It is lethal and the affected males typically die by the time they are aged 2-3 years. A pneumonia or respiratory infection is the usual cause of death. Treatment is mainly supportive.

History and etymology

Menkes disease is named after the American physician John H Menkes (1928-2008) .

Differential diagnosis

Menkes disease may mimic non-accidental injury (NAI) with retinal hemorrhage and bilateral subdural hematomas. Hence, prudence is advised in always ruling out NAI, particularly when other intracranial signs of Menkes disease are not seen. In a similar manner, the differential diagnosis also includes glutaric aciduria.