An Unusual Case of Pancytopenia: The Lessons Learnt.

Area of Science:

• Hematology
• Toxicology
• Internal Medicine

Background:

• Pancytopenia is a frequent clinical finding with diverse etiologies.
• A 36-year-old male presented with neurological symptoms and gastrointestinal distress, leading to the discovery of pancytopenia.

Purpose of the Study:

• To report an unusual case of pancytopenia secondary to arsenic poisoning.
• To emphasize the diagnostic challenges and the utility of a multidisciplinary approach in identifying rare causes of hematological abnormalities.

Main Methods:

• Clinical presentation and laboratory investigations including complete blood count and bone marrow examination.
• Exclusion of infectious causes and subsequent testing for heavy metal toxicity (blood and urine arsenic levels).
• Multidisciplinary team meeting to discuss diagnostic possibilities.

Main Results:

• Patient presented with pancytopenia and neurological symptoms.
• Bone marrow examination revealed nonspecific but suggestive findings of acute hematopoietic insult.
• Elevated blood and urine arsenic levels confirmed arsenic poisoning.
• The patient exhibited multisystemic involvement consistent with arsenic toxicity.

Conclusions:

• Arsenic poisoning can present as pancytopenia, posing a diagnostic challenge, especially with a non-revealing history.
• A high index of suspicion for heavy metal toxicity and a comprehensive, multidisciplinary diagnostic approach are crucial for accurate diagnosis.
• Nonspecific bone marrow findings can be indicative of acute toxic insults to hematopoiesis.