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PART 7: Oncology and Hematology
SECTION 1   Neoplastic Disorders

99 Carcinoma of Unknown Primary
Gauri R. Varadhachary / James L. Abbruzzese

Figure 99-1  Approach to cytokeratin (CK7 and CK20) markers used in CUP.
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Figure 99-2  Treatment algorithm for adenocarcinoma and poorly differentiated adenocarcinoma CUP. C, chemotherapy; CRT, chemoradiation; GI, gastrointestinal; IHC, immunohistochemistry; MRI, magnetic resonance imaging; PSA, prostate-specific antigen; RT, radiation.
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Figure 99-3  Treatment algorithm for squamous cell CUP. C, chemotherapy; CT, computed tomography; PET, positron emission tomography; RT, radiation.
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