PMC5192349_01
Cutaneous mucinosis appearing around surgical scar 1 year after joint replacement.
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We present a case of a 73-year-old man who had multiple, asymptomatic, thin-walled bluish 2- to 3-mm-wide cystic papules on his left knee along the surgical scar approximately 1 year after joint replacement (Fig 1).
Cutaneous mucinosis as histopathology shows Alcian blue positivity.
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Biopsy and staining found increased dermal mucin and alcian blue positivity consistent with cutaneous mucinosis (Fig 2).
Prepatellar ganglion cyst dissecting to the skin through multiple channels on midsagittal magnetic resonance imaging with contrast.
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Midsagittal magnetic resonance imaging with contrast found a prepatellar ganglion cyst dissecting to the skin through multiple channels (Fig 3).
Treated cutaneous mucinosis at a 2-year follow-up appointment shows minimal residual postinflammatory dyschromia.
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A 2-year follow-up examination found no recurrence of the myxoid cysts and good anatomic and cosmetic outcomes with minimal residual postinflammatory dyschromia (Fig 4).