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Ureteral Stone Mimicking Metastasis – Planar Bone Scan When Single-photon Emission Computed Tomography/Computed Tomography Is a Necessity
Address for correspondence: Dr. Ayush Mishra, Department of Nuclear Medicine, SGPGIMS, Lucknow, Uttar Pradesh, India. E-mail: maanayush0007@gmail.com
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Received: ,
Accepted: ,
This article was originally published by Wolters Kluwer - Medknow and was migrated to Scientific Scholar after the change of Publisher.
Abstract
In this case, we demonstrated a ureteric stone that resembled bone metastasis. Because bone-seeking radiopharmaceuticals are excreted into the urine by the kidneys, normal kidneys and bladder are well visualized on skeletal scintigraphs leading to incidental detection of urinary tract abnormalities. Bone tracer uptake related to ureteral stones has been reported [Figure 1] several times before. We present a right ureteral stone mimicking abnormal focal sacral uptake on planar scan in a patient with rectal cancer. This case emphasizes the importance of using single-photon emission computed tomography/computed tomography to determine the cause of abnormal uptake on a planar scan.
Keywords
Bone metastasis
carcinoma lung
ureteral stone
![A 61-year-old female diagnosed as carcinoma lung underwent a technetium 99m-methyl diphosphonate bone scan in our department owing to right pelvic pain for 2 months. (a and b) Anterior and posterior projections, respectively, showing increased tracer uptake in the right sacrum (red arrow) which suspects to be metastatic cancer from lung primary. However, subsequent single-photon emission computed tomography/computed tomography (SPECT/CT) of the abdomen and pelvis showing (c and d) a ureteral stone was responsible for the abnormal sacral uptake (green arrow). The pain was due to a stone in the right ureter. Symptoms and planar bone scan gave high suspicion of metastasis, but SPECT/CT revealed it as a stone in the ureter making SPECT/CT as a necessity.[1234567]](/content/210/2023/38/4/img/IJNM-38-398-g001.png)
Declaration of patient consent
The authors certify that they have obtained all appropriate patient consent forms. In the form, the patient has given her consent for her images and other clinical information to be reported in the journal. The patient understands that her name and initials will not be published and due efforts will be made to conceal her identity, but anonymity cannot be guaranteed.
Financial support and sponsorship
Nil.
Conflicts of interest
There are no conflicts of interest.
Acknowledgments
I/we have not received substantial contributions from noncontributors and no contributor has been omitted.
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