Primary amelanotic leptomeningeal melanocytosis mimicking subarachnoid hemorrhage: a case report of the deceptive masquerader
Yu-Chung Juan, John S. Kuo, Chun-Chung Chen, Ren-Ching Wang, Der-Yang Cho, Yu-Kai Cheng · 2026
Read Primary amelanotic leptomeningeal melanocytosis mimicking subarachnoid hemorrhage: a case report of the deceptive masquerader by Yu-Chung Juan, John S. Kuo, Chun-Chung Chen, Ren-Ching Wang, Der-Yang Cho, Yu-Kai Cheng (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-13171300.txt.
Description
Juan and co-authors present a 2026 case report on a rare brain lining tumor that faked a brain bleed. A 24-year-old man came in with severe headache and a stiff neck. A first scan suggested bleeding around the brain, but vessel imaging found no burst vessel. MRI showed spread along the brain's lining without the bright signal this tumor usually gives.
Spinal fluid tests could not settle the cause. As the patient worsened despite fluid drainage, surgeons took a biopsy. Tissue stains confirmed a pigment-free form of the tumor, a variant that hides on scans. A targeted drug was advised but never started before decline. The patient died about three months after biopsy.
Catalog record
| CREATOR | Yu-Chung Juan, John S. Kuo, Chun-Chung Chen, Ren-Ching Wang, Der-Yang Cho, Yu-Kai Cheng |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 17 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |