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Cubital Tunnel — SCE Neurology MCQ

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HardClinical NeurophysiologyCubital TunnelSCE Neurology

A 64-year-old develops progressive pauses and word-finding difficulty. Speech remains grammatical and motor speech is intact. Single-word comprehension and object knowledge are preserved, but repetition of long phonologically complex sentences is markedly impaired. Which PPA classification is best?

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Correct answer: C — Logopenic variant primary progressive aphasia

Explanation lettering: B = shown as A · A = shown as B · E = shown as C · C = shown as D · D = shown as E

E is correct. Impaired single-word retrieval plus impaired sentence repetition, with preserved grammar, articulation and single-word comprehension, defines logopenic PPA. A requires agrammatism or effortful apraxic speech. B requires loss of word meaning and naming. C is led by behavioural/executive change rather than language. D usually presents with nonfluent apraxic speech before the characteristic oculomotor syndrome.

Reference: International consensus classification of primary progressive aphasia: https://pmc.ncbi.nlm.nih.gov/articles/PMC3059138/