Differential Diagnosis for Small Round Circles in Pelvis on KUB
Single Most Likely Diagnosis
- Phleboliths: These are small, round calcifications that occur within veins, particularly in the pelvic region. They are a common finding on KUB (Kidneys, Ureters, Bladder) radiographs and are usually benign.
Other Likely Diagnoses
- Calcified uterine fibroids: These can appear as small, round calcifications in the pelvis, especially in women of reproductive age.
- Calcified ovarian cysts: Similar to uterine fibroids, ovarian cysts can calcify and appear as round circles on a KUB.
- Prostatic calcifications: In men, calcifications within the prostate gland can also present as small, round densities in the pelvis.
Do Not Miss Diagnoses
- Osteoblastic bone metastases: While less common, metastatic disease to the bones can present with small, round calcifications. Missing this diagnosis could have significant implications for patient management and prognosis.
- Genitourinary stones: Although typically associated with pain and other symptoms, small stones in the urinary tract could be asymptomatic and appear as round calcifications on imaging.
Rare Diagnoses
- Teratomas: These are a type of germ cell tumor that can contain calcifications, including small, round ones visible on a KUB.
- Calcified lymph nodes: In cases of certain infections or malignancies, lymph nodes in the pelvis can become calcified, appearing as small, round circles on radiographs.
- Extra-adrenal paragangliomas: These rare tumors can occur in the pelvis and may contain calcifications that could be seen on a KUB.