Neurol Case Rep | Volume 4, Issue 1 | Case Report | Open Access

The Reversed Clock Syndrome in Patient with Left Brain Tumor: A Case Report

Annapina Mazzotta1,2*, Hasanbelliu Aurel1,2, De Simone Celestino1 and Talacchi Andrea1

1Section of Neurosurgery, San Giovanni Addolorata Hospital, Italy 2Department of Neuroscience, Biomedicine and Movement, Section of Neurosurgery, University of Verona, Italy

*Correspondance to: Annapina Mazzotta 

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Background: The Clock Drawing Test (CDT) test was originally conceived as an examination of visuospatial neglect and inattention. Nowadays it is widely used in clinical neuropsychological practice. The Reversed Clock Syndrome (RCS) is an uncommon syndrome and its most evident manifestation consists in a reversed placement of the numbers on a clock without their omission. This phenomenon is usually the consequence of a lesion affecting the right cerebral hemisphere. Objective: We report a clinical case of reversed clock phenomenon in a patient with a lesion of the left cerebral hemisphere associated with language, attention, memory and praxis disorders. Design: Case report Patient: A 64 years-Old Italian man was referred due to slight hemiparesis on the right side, memory deficit, dyscalculia and verbal production impairment. Results: Pre-op Magnetic Resonance Imaging (MRI) showed the presence of a left parietal lesion in the posterior third of the gyrus cinguli. Overall, neuropsychological assessment indicated significant and widespread cognitive deficits in attention, memory, praxis, language and executive functions. Furthermore, the patient showed spontaneously reversed placement of the clock numbers without number omissions. Conclusion: This case report underlies the difficulties to establish the exact lesion localization in the reversed clock-drawing task.


Case report; Brain tumor; Clock reversed syndrome; Left lesion


Mazzotta A, Aurel H, Celestino DS, Andrea T. The Reversed Clock Syndrome in Patient with Left Brain Tumor: A Case Report. Neurol Case Rep. 2021;4(1):1025..

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