When Neuromuscular Weakness Is Not Chemotherapy‑Related: Spinal Muscular Atrophy Type II Diagnosed After Acute Lymphoblastic Leukemia Onset in a 1‐Year‐Old Child: A Case Report and Review of the Literature

Key Points

• To highlight a rare diagnosis of spinal muscular atrophy type II in a child with acute lymphoblastic leukemia.
• Reviewed the clinical history of a 1-year-old presenting with neuromuscular weakness.
• Conducted diagnostic assessments to differentiate between causes of weakness.
• Reviewed existing literature on similar cases and outcomes.
• Confirmed diagnosis of spinal muscular atrophy type II after ruling out chemotherapy-related causes.
• Discussion of differential diagnosis contributed to understanding misdiagnosis.
• Emphasized the importance of thorough evaluation in pediatric cases involving neuromuscular symptoms.