Challenging Cases in Cerebrovascular Disease.

Area of Science:

• Neurology
• Vascular Neurology
• Cerebrovascular Diseases

Background:

• Cerebrovascular disorders encompass a wide range of conditions, including common causes like atherosclerosis, cardioembolism, and small vessel disease.
• Intracranial hemorrhage results from the rupture of cerebral blood vessels.
• While common stroke etiologies are well-documented, less frequent causes require clinical awareness for timely intervention.

Purpose of the Study:

• To present four distinct cases of stroke resulting from uncommon etiologies.
• To emphasize the importance of considering a broad differential diagnosis in stroke patients.
• To review diagnostic and therapeutic considerations for these rare cerebrovascular conditions.

Main Methods:

• Case report series detailing four patients with stroke of unusual origin.
• Review of clinical presentation, diagnostic findings, and treatment strategies for each case.
• Discussion of relevant literature concerning inflammatory cerebral amyloid angiopathy, microangiopathic thrombotic angiopathy, intracranial hemorrhage secondary to acute promyelocytic leukemia, and paradoxical embolism via patent foramen ovale.

Main Results:

• Case 1: Inflammatory cerebral amyloid angiopathy with considerations for recurrence and management.
• Case 2: Microangiopathic thrombotic angiopathy, its diagnosis, treatment, and association with interferon therapy.
• Case 3: Intracranial hemorrhage in acute promyelocytic leukemia, emphasizing management of coagulopathy and thrombocytopenia.
• Case 4: Ischemic stroke due to paradoxical embolism in a patient with a patent foramen ovale (PFO), discussing PFO management.

Conclusions:

• Clinicians must maintain a high degree of suspicion for diverse and uncommon causes of stroke.
• Prompt recognition and appropriate management of rare stroke etiologies are essential for improving patient prognosis.
• Understanding the specific pathophysiology and treatment nuances of conditions like inflammatory cerebral amyloid angiopathy, thrombotic angiopathies, leukemia-associated hemorrhage, and PFO-related embolism is crucial.