Brain Abscess In a Newly Diagnosed Tetralogy of Fallot.

Haliru Ladan; Ali Lasseini; Aliyu Koko Muhammad; Abubakar Yahaya; Ashafa Birnin Gwari Isa; Aliyu Ladan; Umar Idris; Sabira Mustapha; Bello B. Shehu; Nasiru J Ismail

doi:10.5455/EJMID.20260718063526

Case Report
Online Published: 07 Nov 2026

Eu J Microbiol Infect Dis. 2026; 3(4): 194-197

doi: 10.5455/EJMID.20260718063526

Brain Abscess In a Newly Diagnosed Tetralogy of Fallot.

Haliru Ladan, Ali Lasseini, Aliyu Koko Muhammad, Abubakar Yahaya, Ashafa Birnin Gwari Isa, Aliyu Ladan, Umar Idris, Sabira Mustapha, Bello B. Shehu, Nasiru J Ismail.

Abstract
Abstract
A brain abscess is a localized infection of the brain tissue that initially presents as cerebritis and subsequently progresses to a necrotic core encapsulated by a vascularized capsule.
Brain abscess is an uncommon but potentially fatal complication, occurring in approximately 5%–18.7% of patients with cyanotic congenital heart disease. Congenital heart diseases involve a right-to-left intracardiac shunt that circumvents pulmonary blood flow, thereby causing reduced arterial oxygenation, tissue hypoxia, and cyanosis.
A 9-year-old right-handed boy presented with a 3-month history of recurrent fever, headache, and progressive left-sided weakness.
On general physical examination, digital clubbing and cyanosis were noted. Neurological examination revealed reduced power in the left upper and lower limbs (4/5). A systolic ejection murmur was also audible on cardiovascular examination.
Computed tomography (CT) of the brain demonstrated a ring-enhancing lesion in the right frontal region, consistent with a brain abscess. Chest radiography and echocardiography were subsequently performed and confirmed the diagnosis of Tetralogy of Fallot.
The patient underwent burr-hole aspiration of the abscess, followed by prolonged antibiotic therapy and physiotherapy.

Key words: Keywords: Brain abscess, Cyanotic congenital heart disease, Tetralogy of Fallot.

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How to Cite this Article

Pubmed Style

Ladan H, Lasseini A, Muhammad AK, Yahaya A, Isa ABG, Ladan A, Idris U, Mustapha S, Shehu BB, Ismail NJ. Brain Abscess In a Newly Diagnosed Tetralogy of Fallot.. Eu J Microbiol Infect Dis. 2026; 3(4): 194-197.

doi:10.5455/EJMID.20260718063526

Web Style

Ladan H, Lasseini A, Muhammad AK, Yahaya A, Isa ABG, Ladan A, Idris U, Mustapha S, Shehu BB, Ismail NJ. Brain Abscess In a Newly Diagnosed Tetralogy of Fallot.. https://www.wisdomgale.com/ejmid/?mno=328234 [Access: November 12, 2026].

doi:10.5455/EJMID.20260718063526

AMA (American Medical Association) Style

Ladan H, Lasseini A, Muhammad AK, Yahaya A, Isa ABG, Ladan A, Idris U, Mustapha S, Shehu BB, Ismail NJ. Brain Abscess In a Newly Diagnosed Tetralogy of Fallot.. Eu J Microbiol Infect Dis. 2026; 3(4): 194-197.

doi:10.5455/EJMID.20260718063526

Vancouver/ICMJE Style

Ladan H, Lasseini A, Muhammad AK, Yahaya A, Isa ABG, Ladan A, Idris U, Mustapha S, Shehu BB, Ismail NJ. Brain Abscess In a Newly Diagnosed Tetralogy of Fallot.. Eu J Microbiol Infect Dis. (2026), [cited November 12, 2026]; 3(4): 194-197.

doi:10.5455/EJMID.20260718063526

Harvard Style

Ladan, H., Lasseini, . A., Muhammad, . A. K., Yahaya, . A., Isa, . A. B. G., Ladan, . A., Idris, . U., Mustapha, . S., Shehu, . B. B. & Ismail, . N. J. (2026) Brain Abscess In a Newly Diagnosed Tetralogy of Fallot.. Eu J Microbiol Infect Dis, 3 (4), 194-197.

doi:10.5455/EJMID.20260718063526

Turabian Style

Ladan, Haliru, Ali Lasseini, Aliyu Koko Muhammad, Abubakar Yahaya, Ashafa Birnin Gwari Isa, Aliyu Ladan, Umar Idris, Sabira Mustapha, Bello B. Shehu, and Nasiru J Ismail. 2026. Brain Abscess In a Newly Diagnosed Tetralogy of Fallot.. European Journal of Microbiology and Infectious Diseases, 3 (4), 194-197.

doi:10.5455/EJMID.20260718063526

Chicago Style

Ladan, Haliru, Ali Lasseini, Aliyu Koko Muhammad, Abubakar Yahaya, Ashafa Birnin Gwari Isa, Aliyu Ladan, Umar Idris, Sabira Mustapha, Bello B. Shehu, and Nasiru J Ismail. "Brain Abscess In a Newly Diagnosed Tetralogy of Fallot.." European Journal of Microbiology and Infectious Diseases 3 (2026), 194-197.

doi:10.5455/EJMID.20260718063526

MLA (The Modern Language Association) Style

Ladan, Haliru, Ali Lasseini, Aliyu Koko Muhammad, Abubakar Yahaya, Ashafa Birnin Gwari Isa, Aliyu Ladan, Umar Idris, Sabira Mustapha, Bello B. Shehu, and Nasiru J Ismail. "Brain Abscess In a Newly Diagnosed Tetralogy of Fallot.." European Journal of Microbiology and Infectious Diseases 3.4 (2026), 194-197. Print.

doi:10.5455/EJMID.20260718063526

APA (American Psychological Association) Style

Ladan, H., Lasseini, . A., Muhammad, . A. K., Yahaya, . A., Isa, . A. B. G., Ladan, . A., Idris, . U., Mustapha, . S., Shehu, . B. B. & Ismail, . N. J. (2026) Brain Abscess In a Newly Diagnosed Tetralogy of Fallot.. European Journal of Microbiology and Infectious Diseases, 3 (4), 194-197.

doi:10.5455/EJMID.20260718063526