Eloi MagninGeraldine SylvestreFlora LenoirElfried Dariel • Louise BonnetGilles ChopardGregory TioJulie HidalgoSabrina Ferreira • Catherine MertzMikael BinetruyLudivine ChamardSophie Haffen • Ilham RyffEric LaurentThierry MoulinPierre VandelLucien Rumbach

Few language disordershave been reported in posterior cortical atrophy(PCA). Furthermore, no study has focused on screening for them and described these language deficits. The goal of this work was to describe linguistic examination of PCA patients and the impact of language disorderson neuropsychologicalperformances compared to patients with other neurodegenerative syn- dromes and control groups. Linguistic examination of 9 PCA patients was carried out. The neuropsychologicalperformance of the PCA group (16 patients) in the RAPID battery tests was compared with performances of patients with a logopenic variant of primary progressive aphasia(LPPA), patients with Alzheimer's disease and patients with amnestic mild cognitive impairment, as well as the control group. A ''logopenic syndrome'' with anomia, fluency impairment, and length-dependent deficit was found in 8/9 PCA patients. A comparison with other neu- rodegenerative syndromes showed that not only visual disorders but also language and verbal short-term memory disorders, such as those found in LPPA, can explain neu- ropsychological performances. A ''logopenic syndrome'' is frequently found in PCA and may be associated with poor performance on other verbally mediated neuropsychologi- cal tasks (e.g., verbal memory). Specific logopedic reha- bilitation should be offered to these patients.