PMID- 31939701 OWN - NLM STAT- MEDLINE DCOM- 20200506 LR - 20200506 IS - 1546-3141 (Electronic) IS - 0361-803X (Linking) VI - 214 IP - 3 DP - 2020 Mar TI - Diagnostic Value of CT of Chest, Abdomen, and Pelvis in Patients With Solitary and Multiple Brain Lesions. PG - 636-640 LID - 10.2214/AJR.19.22051 [doi] AB - OBJECTIVE. A common goal in patients with newly discovered brain lesions is to determine if the lesions are primary malignant brain neoplasms, metastases, or benign entities. Such patients often undergo CT of the chest, abdomen, and pelvis (CT CAP) to identify a primary neoplasm that may have metastasized to the brain. The aim of this study is to determine the frequency of finding a primary cancer on CT CAP. MATERIALS AND METHODS. A large academic hospital imaging database was searched for cases of new intracranial lesions with subsequent CT CAP performed for metastatic workup. The frequency of primary neoplasms diagnosed in the chest versus abdominal and pelvic portions of CT scans was determined in patients with newly identified intraaxial and extraaxial brain lesions. Lesion characteristics were recorded including size, number, and the presence of enhancement and hemorrhage. Ancillary signs of an abdominopelvic neoplasm were also recorded. RESULTS. A total of 227 of 287 (79%) cases of newly discovered intracranial lesions were malignant (primary or metastatic) and 60 (21%) were benign. Of the 227 malignant cases, 136 (60%) were primary brain neoplasms and 91 (40%) were brain metastases, and 68 of the 91 (75%) lung primary. Chest CT (CTC) identified a primary neoplasm in 65 of 287 (23%) cases; 63 of those 65 (96%) neoplasms arose in the lungs. CT of the abdomen and pelvis (CTAP) identified a primary neoplasm in only 3 of 287 (1%) cases. In 26 cases in which the intracranial lesions did not enhance, only one was metastatic. CONCLUSION. In patients with newly discovered brain lesions, CTC is warranted, but CTAP is unlikely to be useful in patients without ancillary signs of abdominopelvic neoplasm. FAU - Rothman, Richard K AU - Rothman RK AD - Department of Radiology and Biomedical Imaging, Yale New Haven Hospital, 20 York St, New Haven, CT 06510. FAU - Weinreb, Jeffrey AU - Weinreb J AD - Department of Radiology and Biomedical Imaging, Yale New Haven Hospital, 20 York St, New Haven, CT 06510. FAU - Zucconi, William AU - Zucconi W AD - Department of Radiology and Biomedical Imaging, Yale New Haven Hospital, 20 York St, New Haven, CT 06510. FAU - Malhotra, Ajay AU - Malhotra A AD - Department of Radiology and Biomedical Imaging, Yale New Haven Hospital, 20 York St, New Haven, CT 06510. LA - eng PT - Journal Article DEP - 20200115 PL - United States TA - AJR Am J Roentgenol JT - AJR. American journal of roentgenology JID - 7708173 SB - IM MH - Abdominal Cavity/*diagnostic imaging MH - Adult MH - Aged MH - Brain Neoplasms/*pathology MH - Female MH - Humans MH - Magnetic Resonance Imaging MH - Male MH - Middle Aged MH - Neoplasm Metastasis/*diagnostic imaging MH - Neoplasms, Multiple Primary/*diagnostic imaging MH - Pelvis/*diagnostic imaging MH - Retrospective Studies MH - Thorax/*diagnostic imaging MH - Tomography, X-Ray Computed/*methods OTO - NOTNLM OT - brain OT - malignancy OT - metastasis OT - neoplasm OT - workup EDAT- 2020/01/16 06:00 MHDA- 2020/05/07 06:00 CRDT- 2020/01/16 06:00 PHST- 2020/01/16 06:00 [pubmed] PHST- 2020/05/07 06:00 [medline] PHST- 2020/01/16 06:00 [entrez] AID - 10.2214/AJR.19.22051 [doi] PST - ppublish SO - AJR Am J Roentgenol. 2020 Mar;214(3):636-640. doi: 10.2214/AJR.19.22051. Epub 2020 Jan 15.