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[Villous-lipomatous proliferation of synovial membrane of the knee (lipoma arborescens). Magnetic resonance findings].
Radiol Med. 1998 Mar; 95(3):143-7.RM

Abstract

PURPOSE

We reviewed the imaging patterns of the villous-lipomatous proliferation of the knee synovial membrane (lipoma arborescens), with special reference to the role of MRI in the diagnosis of this rare condition.

MATERIAL AND METHODS

1994 to 1996, we examined four patients, none of them with a history of knee trauma. The clinical picture was characterized by moderate and painful suprapatellar swelling in three cases and by moderate suprapatellar swelling alone in one case. All patients were examined with conventional radiography and MRI; two were submitted to US and two to CT. The diagnosis of lipoma arborescens was suggested on the basis of imaging patterns and then confirmed by histologic findings.

RESULTS

Conventional radiography showed a roughly oblong slim opacity in the suprapatellar recess in all cases; the joint space was always preserved. US showed a villous lesion surrounded by fluid, but provided no specific data on its nature. CT and MRI not only provided better location and morphologic detailing and showed the relationships with articular structures better, but also permitted the direct identification of the fat nodules within the abnormal synovial reaction.

CONCLUSION

We stress the role of MRI in suggesting the correct diagnosis of lipoma arborescens, as it was subsequently confirmed in our series by histologic findings. In fact, fat-suppression sequences, after T1-weighted SE, can typify fat tissue.

Authors+Show Affiliations

U.O. e Cattedra di Radiologia, Dipartimento di Medicina Sperimentale e Clinica, Catanzaro.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

English Abstract
Journal Article

Language

ita

PubMed ID

9638155

Citation

Tamburrini, O, et al. "[Villous-lipomatous Proliferation of Synovial Membrane of the Knee (lipoma Arborescens). Magnetic Resonance Findings]." La Radiologia Medica, vol. 95, no. 3, 1998, pp. 143-7.
Tamburrini O, Milano C, Arcuri PP, et al. [Villous-lipomatous proliferation of synovial membrane of the knee (lipoma arborescens). Magnetic resonance findings]. Radiol Med. 1998;95(3):143-7.
Tamburrini, O., Milano, C., Arcuri, P. P., Mariconda, M., Porpiglia, H., & Perri, G. (1998). [Villous-lipomatous proliferation of synovial membrane of the knee (lipoma arborescens). Magnetic resonance findings]. La Radiologia Medica, 95(3), 143-7.
Tamburrini O, et al. [Villous-lipomatous Proliferation of Synovial Membrane of the Knee (lipoma Arborescens). Magnetic Resonance Findings]. Radiol Med. 1998;95(3):143-7. PubMed PMID: 9638155.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Villous-lipomatous proliferation of synovial membrane of the knee (lipoma arborescens). Magnetic resonance findings]. AU - Tamburrini,O, AU - Milano,C, AU - Arcuri,P P, AU - Mariconda,M, AU - Porpiglia,H, AU - Perri,G, PY - 1998/6/25/pubmed PY - 1998/6/25/medline PY - 1998/6/25/entrez SP - 143 EP - 7 JF - La Radiologia medica JO - Radiol Med VL - 95 IS - 3 N2 - PURPOSE: We reviewed the imaging patterns of the villous-lipomatous proliferation of the knee synovial membrane (lipoma arborescens), with special reference to the role of MRI in the diagnosis of this rare condition. MATERIAL AND METHODS: 1994 to 1996, we examined four patients, none of them with a history of knee trauma. The clinical picture was characterized by moderate and painful suprapatellar swelling in three cases and by moderate suprapatellar swelling alone in one case. All patients were examined with conventional radiography and MRI; two were submitted to US and two to CT. The diagnosis of lipoma arborescens was suggested on the basis of imaging patterns and then confirmed by histologic findings. RESULTS: Conventional radiography showed a roughly oblong slim opacity in the suprapatellar recess in all cases; the joint space was always preserved. US showed a villous lesion surrounded by fluid, but provided no specific data on its nature. CT and MRI not only provided better location and morphologic detailing and showed the relationships with articular structures better, but also permitted the direct identification of the fat nodules within the abnormal synovial reaction. CONCLUSION: We stress the role of MRI in suggesting the correct diagnosis of lipoma arborescens, as it was subsequently confirmed in our series by histologic findings. In fact, fat-suppression sequences, after T1-weighted SE, can typify fat tissue. SN - 0033-8362 UR - https://www.unboundmedicine.com/medline/citation/9638155/[Villous_lipomatous_proliferation_of_synovial_membrane_of_the_knee__lipoma_arborescens___Magnetic_resonance_findings]_ L2 - https://medlineplus.gov/bonecancer.html DB - PRIME DP - Unbound Medicine ER -