1999
DOI: 10.1016/s0959-8049(99)00077-5
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18F-FDG whole body positron emission tomography (PET) in patients with unknown primary tumours (UPT)

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Cited by 123 publications
(72 citation statements)
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“…According to the literature, carcinoma of the lung and pancreas are the most common primary carcinomas that initially present as CUP (15,16). Other common malignancies such as colorectal, breast, and prostate cancer infrequently present as CUP (15,16).…”
Section: Discussionmentioning
confidence: 99%
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“…According to the literature, carcinoma of the lung and pancreas are the most common primary carcinomas that initially present as CUP (15,16). Other common malignancies such as colorectal, breast, and prostate cancer infrequently present as CUP (15,16).…”
Section: Discussionmentioning
confidence: 99%
“…Other common malignancies such as colorectal, breast, and prostate cancer infrequently present as CUP (15,16). The anatomic location, size, and number of the lesions (inadequate viable liver tissue that could remain after operation), or patient's comorbid conditions (i.e., cardiac, pulmonary, or renal failure), each one alone or in combination, makes operation unsafe or impossible (17).…”
Section: Discussionmentioning
confidence: 99%
“…Recent series have reported the utility of PET imaging in patients specifically with cervical lymph node presentations [16][17][18][19][20][21][22] as well as in other sites [23][24][25][26]. Those studies indicate that PET imaging can detect an unknown primary tumor in 20%-60% of patients when conventional workups have failed to do so.…”
Section: Pet Scanning In Unknown Primary Cancer Gary Greene MDmentioning
confidence: 99%
“…The rate of primary tumour detection by FDG-PET/CT found in our study is in agreement with most studies in literature, with site detection rates of between 21% and 47%. 13,14,15,16,17,18 The low rate of detection of primary in CUPS, by imaging modalities employed so far, attributed to various factor; spontaneous regression, immune modulated destruction of the primary cancer , faster proliferation rate of lymphnodal metastases .and removal of primary site by sloughing of a necrotic tumour from the gastrointestinal tract are discussed . Bronchogenic carcinoma mistaken for a lymph node metastasis may also be an explanation for an unsuccessful primary tumour search.…”
mentioning
confidence: 99%
“…Various other studies mentioned a wide range of false positive result (7 to 31 %). 14,15,16,17,18,19 These false positive result could be due to a few factors like a high physiological uptake in head and neck region and GIT. The small size of the tumour has also been attributed to missing the lesion on biopsy, wherein a sampling error, could lead to apparent false positive FDG -PET results.…”
mentioning
confidence: 99%