Olukemi A Esan MBBS, Maurice Grant MD, Sharon L Wenger PhD.
A 75-year-old man presents with a 3 year history of lymphocytosis. He recently developed a cutaneous lesion on his upper lip that was excised at another facility. The patient reports that the pathology of the cutaneous lesion revealed a ‘lymphoma’. This has yet to be confirmed. A peripheral blood smear ordered at his most recent visit included morphologic examination, flow cytometry and fluorescent in situ hybridization (FISH).
Laboratory Results
Table 1: Complete blood count and differential
Laboratory Test |
Patient Result |
Reference Range |
Hemoglobin |
12.6 g/dl |
13.1 -17.3 g/dl |
Hematocrit |
37.8 % |
39.8 – 50.2 % |
Platelet count |
95 Thou/ul |
140-450 Thou/ul |
White blood cell count |
76.9 Thou/ul |
3.5 -11.0 Thou/ul |
DIFFERENTIAL |
|
|
Polymorphonuclear cells |
7 % |
40-75% |
Lymphocytes |
89 % |
20-45% |
Eosinophils |
2 % |
1-6% |
Monocytes |
2 % |
4-13% |
Basophils |
0 % |
0-1% |
Nucleated red blood cells |
0 |
0 |