Test on Progressive Hemifacial Atrophy: Romberg's Syndrome

Question 1: The pathogenesis of progressive hemifacial atrophy may be a lymphocytic neurovasculitis or a variant of localized scleroderma.

A. Ano

B. Ne

Explanation: The study materials state that the pathogenesis of progressive hemifacial atrophy may be a lymphocytic neurovasculitis or a variant of localized scleroderma.

Question 2: According to the study materials, what was Dr. Moritz Heinrich Romberg's significant contribution to the understanding of hemifacial atrophy?

A. He published the initial description of the disorder.

B. He further described the clinical manifestations of hemifacial atrophy.

C. He coined the term "progressive hemifacial atrophy" (PHA).

D. He conducted clinical and ultrastructural studies of Romberg's hemifacial atrophy, documenting sonographic findings.

Explanation: The study materials state that Dr. Moritz Heinrich Romberg "further described the clinical manifestations of hemifacial atrophy" in 1846, after publishing the first systematic neurology textbook. The initial description was by Dr. Caleb Hillier Parry, the term PHA was coined by Albert Eulenburg, and clinical and ultrastructural studies with sonographic findings were documented by Pensler et al.

Question 3: Deterioration of intelligence is among the most common clinical manifestations of central nervous system involvement in patients with progressive hemifacial atrophy.

A. Ano

B. Ne

Explanation: The study materials state that clinical manifestations of CNS involvement in PHA are 'usually expressed as seizures, chronic headaches, and/or optic neuritis; and less commonly as neuropsychiatric disorders, deterioration of intelligence, and/or ischemic stroke.' This indicates that deterioration of intelligence is a less common manifestation, not among the most common.

Question 4: Experimental animal studies have disproven the hypothesis that hyperactivity of the sympathetic nervous system causes features of progressive hemifacial atrophy (PHA).

A. Ano

B. Ne

Explanation: Experimental animal studies support the hypothesis that hyperactivity of the sympathetic nervous system causes features of PHA, rather than disproving it.

Question 5: Which of the following brain imaging abnormalities are commonly observed in symptomatic patients with Progressive Hemifacial Atrophy (PHA)?

A. Atrophy and calcinosis

B. Inflammation of the superior cervical ganglion

C. Chronic perivascular lymphocytic inflammation

D. Hypoplasia of dermal appendages

Explanation: When brain imaging is performed in symptomatic patients with PHA, abnormalities such as atrophy and calcinosis are common. Inflammation of the superior cervical ganglion is a neurogenic theory, not an imaging finding, while chronic perivascular lymphocytic inflammation is a histologic finding from brain biopsies, not an imaging abnormality. Hypoplasia of dermal appendages refers to dermal changes, not brain imaging.