Pathophysiology for laboratory abnormalities:
(1) rmetastases
(2) acute phase reactants
(3) tumor product
Changes in hematology tests may include:
(1) pancytopenia
(2) other deficiencies: leucopenia, anemia, lymphopenia
(3) thrombocytosis
(4) elevated erythrocyte sedimentation rate (> 100 mm per hour)
Changes in chemistry tests may include
(1) sustained elevation of the serum ferritin concentration
(2) elevated serum alkaline phosphatase concentration (isoenzymes may be helpful)
(3) elevated serum LDH concentration (isoenzymes may be helpful)
(4) elevated serum vitamin B12 concentration
(5) elevated serum angiotensin converting enzyme (ACE) concentration (which would require consideration of sarcoidosis)
Additional laboratory findings not listed:
(1) hypoglycemia
(2) elevated C-reactive protein (CRP)
(3) polycythemia
(4) hypercalcemia