Emergence and evolution of standardization systems in medical biology laboratories.

Introduction: The history of standardization relating to the activities of medical laboratories traces the development of quality system standards in the world, and their evolution.

Content: In this study, we have included the key benchmarks that represent the stages of the quality system's evolution in recent decades. Accreditation of medical laboratories has become compulsory in most countries, regarding national or international standards.

Aortic dissection presenting as a stroke: a case report.

Aortic dissection is an uncommon yet frequently fatal illness. Patients generally present with tearing chest pain with possible acute hemodynamic instability. Hence, early diagnosis and intervention is critical for survival.