In recent years, various injectable materials have come into use to
improve esthetic appearance. OBJECTIVE: We describe the clinical and
histopathologic aspects of two patients who received intradermal injections of an
unknown dermal filler and the different diagnostic tools used to identify the
unknown injected material (reflexion electron microscopy, electron dispersing
x-ray) and discuss the possibility of a metastatic granulomatous reaction in one
patient. We also describe two treatments for this complication and evaluate the
legal considerations of the use of materials that have been adulterated and/or
whose composition is unknown to the patient. METHODS: We present two patients who
developed a granulomatous foreign-body reaction after the subcutaneous injection
of an esthetic implant. We treated patient 1 with isotretinoin and 2 months later
with doxycycline. We administered isotretinoin to patient 2. RESULTS: We observed
a partial improvement in patient 1 after isotretinoin treatment and a remarkable
improvement after administration of doxycycline. In patient 2, we observed an
excellent response to isotretinoin. CONCLUSION: Isotretinoin and doxycycline,
when administered separately, seem to offer effective treatment for reactions
resulting from silicone implants. However, further studies that include a larger
number of patients and those with reactions secondary to other fillers are
clearly needed before the effectiveness of this treatment can be confirmed