Posttraumatic Pseudolipoma (Fat Necrosis) Mimicking Atypical Lipoma or Liposarcoma on MRI

Overview

Journal Radiol Case Rep

Publisher Elsevier

Specialty Radiology

Date 2016 Jun 16

PMID 27303464

Citations 8

Authors

Kimberly J Burkholz

Catherine C Roberts

Thomas K Lidner

Affiliations

Soon will be listed here.

Abstract

We report a case of a 53 year old female who presented with a painless mass over her left greater trochanter. Evaluation with MRI and ultimately biopsy led to a diagnosis of fat necrosis. If this diagnosis had been considered with greater confidence, a conservative approach could have been taken and biopsy avoided. In patients with lesions demonstrating classic locations and imaging features of fat necrosis, observation without biopsy is appropriate.

Citing Articles

Diagnostic Superiority of Dual-Time Point [F]FDG PET/CT to Differentiate Malignant from Benign Soft Tissue Tumors.

dAbadie P, Gheysens O, Lhommel R, Jamar F, Kirchgesner T, Mazzeo F Diagnostics (Basel). 2023; 13(20).

PMID: 37892023 PMC: 10606132. DOI: 10.3390/diagnostics13203202.

Nodular cystic fat necrosis: a distinctive rare soft-tissue mass.

Kim M, Gross J, Ahlawat S, Levin A, Fayad L Skeletal Radiol. 2023; 53(3):583-588.

PMID: 37572150 DOI: 10.1007/s00256-023-04426-0.

Fat Necrosis Following Application of a Tourniquet During Total Knee Arthroplasty.

Sammut K, Gatt R, Chircop K Arthroplast Today. 2022; 16:207-210.

PMID: 35874148 PMC: 9304645. DOI: 10.1016/j.artd.2022.06.005.

Intra-orbital fat necrosis following transcaruncular orbitotomy mimicking a surgical site infection: A case report.

Kapoor A, Vijitha V, Mittal R, Satyanarayana T Saudi J Ophthalmol. 2022; 35(4):350-352.

PMID: 35814993 PMC: 9266475. DOI: 10.4103/1319-4534.347307.

Fat necrosis: A neglected side effect of intramuscular injections.

Chaima K, Mariem A, Emna B, Slim C, Fatma H, Tahya B Clin Case Rep. 2022; 10(6):e5971.

PMID: 35765288 PMC: 9207225. DOI: 10.1002/ccr3.5971.

References

Tamvakopoulos G, Toms A, Glasgow M . Subcutaneous thigh fat necrosis as a result of tourniquet control during total knee arthroplasty. Ann R Coll Surg Engl. 2006; 87(5):W11-3. PMC: 1963985. DOI: 10.1308/147870805x60761. View

Hurt M, Santa Cruz D . Nodular-cystic fat necrosis. A reevaluation of the so-called mobile encapsulated lipoma. J Am Acad Dermatol. 1989; 21(3 Pt 1):493-8. View

Wolpe F, Chandarlapaty S, Jacobi J, Wells M, Rosenthal S . Gallium uptake in a paraplegic patient with bilateral lower extremity fat necrosis. Clin Nucl Med. 1989; 14(12):930. DOI: 10.1097/00003072-198912000-00020. View

Cunningham K, Atkinson S, Paes B . Subcutaneous fat necrosis with hypercalcemia. Can Assoc Radiol J. 1990; 41(3):158-9. View

Theumann N, Abdelmoumene A, Wintermark M, Schnyder P, Gailloud M, Resnick D . Posttraumatic pseudolipoma: MRI appearances. Eur Radiol. 2005; 15(9):1876-80. DOI: 10.1007/s00330-005-2757-2. View

Aust M, Spies M, Kall S, Vogt P . [Diagnosis and treatment of posttraumatic pseudolipomas. A retrospective analysis]. Unfallchirurg. 2006; 109(11):948-55. DOI: 10.1007/s00113-006-1160-z. View

David L, DeFranzo A, Marks M, Argenta L . Posttraumatic pseudolipoma. J Trauma. 1996; 40(3):396-400. DOI: 10.1097/00005373-199603000-00012. View

Andac N, Baltacioglu F, Cimsit N, Tuney D, Aktan O . Fat necrosis mimicking liposarcoma in a patient with pelvic lipomatosis. CT findings. Clin Imaging. 2003; 27(2):109-11. DOI: 10.1016/s0899-7071(02)00519-3. View

Canteli B, Saez F, de Los Rios A, Alvarez C . Fat necrosis. Skeletal Radiol. 1996; 25(3):305-7. DOI: 10.1007/s002560050086. View

10.

Chan L, Gee R, Keogh C, Munk P . Imaging features of fat necrosis. AJR Am J Roentgenol. 2003; 181(4):955-9. DOI: 10.2214/ajr.181.4.1810955. View

11.

Murphey M, Carroll J, Flemming D, Pope T, Gannon F, Kransdorf M . From the archives of the AFIP: benign musculoskeletal lipomatous lesions. Radiographics. 2004; 24(5):1433-66. DOI: 10.1148/rg.245045120. View

12.

Lopez J, Saez F, Alejandro Larena J, Capelastegui A, Martin J, Canteli B . MRI diagnosis and follow-up of subcutaneous fat necrosis. J Magn Reson Imaging. 1997; 7(5):929-32. DOI: 10.1002/jmri.1880070523. View

13.

Rodriguez M, Lopez G, Prieto P, Fernandez L, Willisch A, Arce M . Massive subcutaneous and intraosseous fat necrosis associated with pancreatitis. Natural evolution of the radiographic picture. Clin Rheumatol. 1997; 16(2):199-203. DOI: 10.1007/BF02247850. View

14.

Tsai T, Evans H, Donnelly L, Bisset 3rd G, Emery K . Fat necrosis after trauma: a benign cause of palpable lumps in children. AJR Am J Roentgenol. 1997; 169(6):1623-6. DOI: 10.2214/ajr.169.6.9393177. View

15.

Takao H, Yamahira K, Watanabe T . Encapsulated fat necrosis mimicking abdominal liposarcoma: computed tomography findings. J Comput Assist Tomogr. 2004; 28(2):193-4. DOI: 10.1097/00004728-200403000-00007. View

16.

Sundaram M, McGuire M, Herbold D, Beshany S, Fletcher J . High signal intensity soft tissue masses on T1 weighted pulsing sequences. Skeletal Radiol. 1987; 16(1):30-6. DOI: 10.1007/BF00349925. View

17.

Chuang S, Chiu H, Chang C . Subcutaneous fat necrosis of the newborn complicating hypothermic cardiac surgery. Br J Dermatol. 1995; 132(5):805-10. DOI: 10.1111/j.1365-2133.1995.tb00731.x. View

18.

Lee D, Chang S . Subcutaneous nodules showing fat necrosis owing to mesotherapy. Dermatol Surg. 2005; 31(2):250-1. DOI: 10.1097/00042728-200502000-00027. View

19.

Chen H, Tsang Y, Wu C, Su C, Hsu J . Perirenal fat necrosis secondary to hemorrhagic pancreatitis, mimicking retroperitoneal liposarcoma: CT manifestation. Abdom Imaging. 1996; 21(6):546-8. DOI: 10.1007/s002619900123. View