{"paper_id":"f217b8e0-54e5-4216-bf27-504be8975e66","body_text":"Abstract\nGiven the unique intra-peritoneal anatomic location of the adnexa, tubo-ovarian diseases can commonly spread into the peritoneal cavity. Peritoneal seeding may occur in a spectrum of adnexal conditions including infectious diseases, endometriosis, and benign or malignant primary or secondary ovarian tumors. CT is usually the imaging modality on which the concomitant involvement of the peritoneum and the ovary is depicted. The first diagnosis to be considered by the radiologist is generally peritoneal carcinomatosis from ovarian cancer but other conditions cited above have also to be borne in mind and may be suggested on the basis of careful assessment of CT findings or on further MR findings. MRI may indeed help characterize the lesions in some cases. The purpose of this review is to describe the clinical and imaging patterns of peritoneal involvement that may be found in association with different ovarian lesions. Familiarity with these patterns and diagnoses will help the radiologist narrow the differential diagnosis and make an accurate diagnosis, thus facilitating patient management and avoiding unnecessary invasive treatment.\nSimilar content being viewed by others\nReferences\nSpencer JA, Swift SE, Wilkinson N, et al. (2001) Peritoneal carcinomatosis: image-guided peritoneal core biopsy for tumor type and patient care. Radiology 221:173–177\nKim SH, Kim SH, Yang DM, Kim KA (2004) Unusual causes of tubo-ovarian abscess: CT and MR imaging findings1. RadioGraphics 24:1575–1589\nVicens RA, Patnana M, Le O, et al. (2015) Multimodality imaging of common and uncommon peritoneal diseases: a review for radiologists. 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Am J Surg Pathol 27:650–657\nAcknowledgements\nThe authors thank Pr Régent for providing iconographic material.\nAuthor information\nAuthors and Affiliations\nCorresponding author\nEthics declarations\nFunding\nNo funding was received for this study.\nConflict of interest\nPierre-Jean Valette receives personal income from Philips Medical Systems for providing medical advice on image management but has no financial activities related to the present article. The other authors declare that they have no conflict of interest.\nEthical approval\nAll procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The Institutional Review Board approval was obtained.\nInformed consent\nFor this type of study formal consent is not required.\nRights and permissions\nAbout this article\nCite this article\nOgnong-Boulemo, A., Dohan, A., Hoeffel, C. et al. Adnexal masses associated with peritoneal involvement: diagnosis with CT and MRI. Abdom Radiol 42, 1975–1992 (2017). https://doi.org/10.1007/s00261-017-1089-4\nPublished:\nIssue date:\nDOI: https://doi.org/10.1007/s00261-017-1089-4","source_license":"CC0","license_restricted":false}