28 February 2026
: Case report 
Bilateral Cochlear Implantation in a Child With Galloway-Mowat Syndrome: A Case Report
Challenging differential diagnosis, Diagnostic / therapeutic accidents, Unusual setting of medical care, Unexpected drug reaction, Rare disease, Clinical situation which can not be reproduced for ethical reasons
Marek Porowski
ABCDEF 1, Henryk Skarżyński ABF 1, Piotr Henryk Skarżyński ADE 2,3*
DOI: 10.12659/AJCR.950119
Am J Case Rep 2026; 27:e950119
Table 1 Timeline of key clinical events.
| Date/age | Event |
|---|---|
| April 2021 | Birth |
| July 2021 (3 months old) | Profound hearing loss confirmed by ABR |
| September 2021 (5 months old) | Fitted with bilateral hearing aids; no significant responses observed with amplification. Diagnosed with GAMOS |
| March 2023 (2 years old) | Left CI surgery performed (first implant). No complications noted |
| April 2023 (2 years old) | Activation of left CI; auditory rehabilitation initiated |
| January 2024 (2 years 9 months old) | Right CI surgery performed (second implant). No complications noted |
| February 2024 (2 years 10 months old) | Activation of right CI; bilateral auditory rehabilitation continued |
| August 2024 (3 years 4 months old) | Follow-up ~6 months after second implant: BOA test demonstrates improved responses; LittlEARS questionnaire (adapted version) indicates auditory progress |