Foreign body reaction to soft tissue filler simulating atypical lipomatous tumor: report of a case.
Injectable silicone or microimplant has been extensively used for the soft tissue augmentation. Here we report a case of cystic granulomatous reaction to injectable tissue filler, possibly liquid silicone, used for tissue augmentation in the buttocks. Patient presented with a progressive painful swelling in the lower back over L4-L5 and S1 lumbosacral region of 4-month duration. The lump was excised and microscopic examination revealed multiple cystic spaces of variable size lined by foreign body giant cells and macrophages. There were proliferating spindle cells admixed with many multivacuolated mononuclear cells simulating lipoblasts. These morphologic features were highly reminiscent of atypical lipomatous tumor. To our knowledge, this is the second recorded case from the Middle East of such an unusual foreign body reaction. The dermatologists and pathologists should be aware of this unusual lesion. Although rare, this reaction can have important esthetic implication and the patient should be informed about their risk.
Department of Pathology, Al-Jahra Hospital, Kuwait. gopen71@yahoo.co.in
Naorem Gopendro
NG
Singh
Mirza
M
Kahvic
Amre Ahmed
AA
Rifaat
Ibrahim
I
Alenezi
D000328:Adult; D002081:Buttocks / Q000473:pathology* / Q000601:surgery; D003937:Diagnosis, Differential; D005260:Female; D005549:Foreign-Body Reaction / Q000175:diagnosis* / Q000473:pathology* / Q000601:surgery; D006651:Histocytochemistry; D006801:Humans; D008067:Lipoma / Q000473:pathology; D008853:Microscopy; D019736:Prostheses and Implants / Q000009:adverse effects*; D012871:Skin Diseases / Q000175:diagnosis* / Q000473:pathology* / Q000601:surgery