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CANCER OF UNKNOWN PRIMARY FOUNDATION

OnHealthy

Diagnosing CUP in Australia – an interesting survey

March 15, 2017

The abstract from a recent paper in Internal Medicine Journal makes for very interesting, if scary, reading: ‘Perceptions of Cancer of Unknown Primary Site – A National Survey of Australian Medical Oncologists: Australian Medical Oncologist CUP survey’ (Christos S Karapetis et al, Jan 2017).  The authors include Penny Schofield of our Advisory Board.

The researchers invited all members of the Medical Oncology Group of Australia to participate in a national, anonymous online survey about CUP. The survey collected data regarding diagnosis acceptance, diagnostic tests, treatment protocols and communication practices around the diagnosis of CUP. There were 86 respondents of which 80 (93%) were directly involved in the assessment of patients with CUP. The results showed that the approach to diagnosis, investigation and management of CUP by medical oncologists in Australia is variable. Many preferred to estimate the primary site and treat accordingly. PBS restrictions may encourage the practice of ‘best guessing’.

More detail: Eighty-five (99%) respondents were prepared to make a diagnosis of CUP if, after appropriate diagnostic tests, the primary location could not be ascertained. 83% would assign a primary site to obtain Pharmaceutical Benefits Schedule (PBS) funding of medical therapy. 62% did not have a specific treatment protocol designed for CUP. The majority of oncologists used serum tumour markers and CT scans in the initial work-up, whilst 43% indicated they would use a PET scan in the majority of cases. The majority would arrange mammography in female patients. Thematic analysis of responses to open-ended questions about how CUP is described identified little consistency in the language being used.



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