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Case Report
Online Published: 07 Aug 2022
 


A classic case of pseudo subarachnoid haemorrhage (SAH) due to secondary polycythemia

Alekya Katamreddy, Venkatesh Manchikanti.


Abstract
Presentation of symptoms and clinical history significantly differentiates true acute subarachnoid haemorrhage (SAH)from pseudo-SAH. We report a 25-year-old man who presented with recurrent headaches and has been attending a pulmonologist for recurrent chest infections. Non-Enhanced CT(NECT) of the brain was done, which showed extra-axial sulcal hyper density along cerebral arteries and hyperdense venous sinuses. MR imaging confirmed the linear hypointensity along vessels on susceptibility-weighted images(SWI), suggesting an increased concentration of paramagnetic deoxyhemoglobin within cerebral vessels; findings suggested polycythaemia mimicking SAH. Pseudo SAH is a potential mimic of SAH. Awareness of various manifestations of pseudo-SAH is essential for proper treatment, avoiding unnecessary investigative modalities like angiographic studies, invasive procedures like Lumbar puncture, etc. Polycythaemia presenting as pseudo subarachnoid haemorrhage is a rare differential. Clinical history and MR imaging help to differentiate SAH from pseudo-SAH.

Key words: Pseudo subarachnoid hemorrhage, MRI-SWI sequence, Hypoxia, Haematocrit


 
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How to Cite this Article
Pubmed Style

Katamreddy A, Manchikanti V. A classic case of pseudo subarachnoid haemorrhage (SAH) due to secondary polycythemia. Int J Med Rev Case Rep. 2022; 6(10): 80-82. doi:10.5455/IJMRCR.172-1623906901

Web Style

Katamreddy A, Manchikanti V. A classic case of pseudo subarachnoid haemorrhage (SAH) due to secondary polycythemia. https://www.mdpub.net/?mno=88631 [Access: April 02, 2025]. doi:10.5455/IJMRCR.172-1623906901

AMA (American Medical Association) Style

Katamreddy A, Manchikanti V. A classic case of pseudo subarachnoid haemorrhage (SAH) due to secondary polycythemia. Int J Med Rev Case Rep. 2022; 6(10): 80-82. doi:10.5455/IJMRCR.172-1623906901


Vancouver/ICMJE Style

Katamreddy A, Manchikanti V. A classic case of pseudo subarachnoid haemorrhage (SAH) due to secondary polycythemia. Int J Med Rev Case Rep. (2022), [cited April 02, 2025]; 6(10): 80-82. doi:10.5455/IJMRCR.172-1623906901


Harvard Style

Katamreddy, A. & Manchikanti, . V. (2022) A classic case of pseudo subarachnoid haemorrhage (SAH) due to secondary polycythemia. Int J Med Rev Case Rep, 6 (10), 80-82. doi:10.5455/IJMRCR.172-1623906901


Turabian Style

Katamreddy, Alekya, and Venkatesh Manchikanti. 2022. A classic case of pseudo subarachnoid haemorrhage (SAH) due to secondary polycythemia. International Journal of Medical Reviews and Case Reports, 6 (10), 80-82. doi:10.5455/IJMRCR.172-1623906901


Chicago Style

Katamreddy, Alekya, and Venkatesh Manchikanti. "A classic case of pseudo subarachnoid haemorrhage (SAH) due to secondary polycythemia." International Journal of Medical Reviews and Case Reports 6 (2022), 80-82. doi:10.5455/IJMRCR.172-1623906901


MLA (The Modern Language Association) Style

Katamreddy, Alekya, and Venkatesh Manchikanti. "A classic case of pseudo subarachnoid haemorrhage (SAH) due to secondary polycythemia." International Journal of Medical Reviews and Case Reports 6.10 (2022), 80-82. Print. doi:10.5455/IJMRCR.172-1623906901


APA (American Psychological Association) Style

Katamreddy, A. & Manchikanti, . V. (2022) A classic case of pseudo subarachnoid haemorrhage (SAH) due to secondary polycythemia. International Journal of Medical Reviews and Case Reports, 6 (10), 80-82. doi:10.5455/IJMRCR.172-1623906901


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