Evidence map›Paper›PMID 39086611›Full record

ArticleWorld journal of radiology2024

Incidence of exclusive extrapelvic skeletal metastasis in prostate carcinoma on bone scintigraphy.

Parneet Singh, Kanhaiyalal Agrawal, Ashique Rahman, Tejasvini Singhal, Girish Kumar Parida, Gopinath Gnanasegaran

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Article in World journal of radiology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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6 authors.

Parneet SinghDepartment of Nuclear Medicine, All India Institute of Medical Sciences, Bhubaneshwar 751019, Odisha, India.
Kanhaiyalal AgrawalDepartment of Nuclear Medicine, All India Institute of Medical Sciences, Bhubaneshwar 751019, Odisha, India. nucmed_kanhaiyalal@aiimsbhubaneswar.edu.in.
Ashique RahmanDepartment of Nuclear Medicine, All India Institute of Medical Sciences, Bhubaneshwar 751019, Odisha, India.
Tejasvini SinghalDepartment of Nuclear Medicine, All India Institute of Medical Sciences, Bhubaneshwar 751019, Odisha, India.
Girish Kumar ParidaDepartment of Nuclear Medicine, All India Institute of Medical Sciences, Bhubaneshwar 751019, Odisha, India.
Gopinath GnanasegaranDepartment of Nuclear Medicine, Royal Free Hospital, London NW3 2QG, United Kingdom.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBone is one of the common sites of metastasis from prostate carcinoma. Bone scintigraphy (BS) is one of the most sensitive imaging modalities currently used for bone metastatic work-up. Skeletal metastasis in prostate carcinoma commonly involves pelvic bones but rarely involves extrapelvic-extraspinal sites.

aimTo retrospectively analyze the BS data to determine the pattern of skeletal metastases in the prostate carcinoma.

methodsThis retrospective observational study involves patients with biopsy-proven prostate carcinoma referred for BS for staging assessment. Patients with abnormal BS were evaluated for the pattern of skeletal involvement and data were presented in descriptive format in the form of percentages.

resultsA total of 150 patients with biopsy-proven prostate cancer who were referred for staging were included in the study. Thirteen of 150 patients (8.67%) had no abnormal uptake on planar images, ruling out metastatic disease. Twenty-four patients (16%) had heterogeneous uptake in the spine with distribution characteristic of degenerative disease and no scan pattern of metastatic disease. Thirty patients (20%) had multifocal uptake involving both pelvic and extra pelvic bones on planar images typical for skeletal metastasis and were considered metastatic. Eighty-three out of 150 patients (55.3%) had increased tracer uptake, which was indeterminate, thus, single photon emission computed tomography-computed tomography (SPECT-CT) was acquired, which showed 51 with metastatic disease, 31 benign lesions, and one indeterminate finding. Seven of 150 patients had exclusive pelvic bone uptake, which was found to be metastatic in 4/7 patients in SPECT-CT. Fifty six out of 150 patients showed exclusive extrapelvic tracer uptake, of which only 3 had vertebral metastatic disease. None of the patients with increased uptake exclusively in the extrapelvic-extraspinal location was metastatic.

conclusionThe incidence of exclusive extrapelvic skeletal metastatic disease in prostate carcinoma is 2% (excluding one patient with indeterminate findings). Further, none of the patients in the current study had exclusive extrapelvic-extraspinal metastasis. Thus, exclusive extrapelvic-extraspinal focal abnormality on planar BS carries a very low probability of metastatic disease and hence, further imaging or SPECT-CT can be safely avoided in such cases.

Indexed as

Bone scanPelvicProstate cancerSingle photon emission computed tomography-computed tomographySkeletal metastasis

Identifiers

PMID39086611
PMCPMC11287433

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