Laboratory abnormalities in patients with cancer

Area of Science:

• Veterinary Oncology
• Clinical Pathology
• Diagnostic Medicine

Background:

• Cancer frequently causes diverse abnormalities affecting complete blood counts, serum biochemistry, and urinalysis.
• Distinguishing between primary marrow and extramarrow malignancies is crucial for interpreting hematologic changes.
• Understanding the pathogenesis of cancer-induced abnormalities guides diagnostic and therapeutic approaches.

Purpose of the Study:

• To review distinctive diagnostic points and pathogenesis-based management for cancer-associated abnormalities.
• To differentiate blood count abnormalities arising from marrow versus extramarrow malignancies.
• To provide a problem-oriented approach to diagnosing and managing various paraneoplastic syndromes.

Main Methods:

• Review of literature focusing on pathogenesis and diagnostic markers of cancer-related abnormalities.
• Categorization of abnormalities based on affected systems (hematopoietic, metabolic, renal, etc.).
• Emphasis on clinical history and diagnostic testing for accurate neoplasm identification.

Main Results:

• Malignancies directly impact marrow function or cause secondary blood abnormalities.
• Hypercalcemia, hypo/hyperproteinemia, hypoglycemia, and elevated organ enzymes are common paraneoplastic syndromes.
• Urinary tract neoplasia can manifest as hematuria and exfoliated tumor cells in urine sediment.

Conclusions:

• Pathogenesis-informed management is essential for cancer-associated abnormalities.
• Early and aggressive diagnostics are vital for identifying underlying neoplasms.
• Recognizing paraneoplastic syndromes aids in timely and effective treatment strategies.