Synonym(s)
Cutaneous metaplastic synovial cyst
DefinitionThis section has been translated automatically.
Rare, cystic, usually post-traumatic, firm, subcutaneous nodule.
EtiopathogenesisThis section has been translated automatically.
Predominantly post-traumatic; rarely in connective tissue diseases without previous trauma!
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Clinical featuresThis section has been translated automatically.
Solitary, rarely multiply occurring, firm, skin-coloured, subcutaneous nodule. Generally occurring in areas that have been traumatically affected, either by previous surgery or accidental trauma.
HistologyThis section has been translated automatically.
Intradermal (not epithelially lined) pseudocyst. Villous structures that protrude into the lumen mimic hyperplastic synovia. Surrounding connective tissue with mixed cellular inflammatory infiltrate and features of the scar.
TherapyThis section has been translated automatically.
Excision is curative.
Note(s)This section has been translated automatically.
Apparently metaplastic synovial cysts without traumatic previous damage also occur in connection with connective tissue malformations such as Ehlers-Danlos syndrome.
LiteratureThis section has been translated automatically.
- Bhawan J et al (1990) Cutaneous metaplastic synovial cyst. J Cutan catheter 17: 22-26
- Choonhakarn C, Tang S (2003) Cutaneous metaplastic synovial cyst. J Dermatol 30: 480-484
- Lin YC, Tsai TF (2003) Cutaneous metaplastic synovial cyst: unusual presentation with "a bag of worms". Dermatol Surgery 29: 198-200
- Nieto S et al (1997) Cutaneous metaplastic synovial cyst in an Ehlers-Danlos patient. On J Dermatopathol 19: 407-410
- Singh SR et al (1999) Multiple cutaneous metaplastic synovial cysts. J Am Acad Dermatol 41: 330-332
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Disclaimer
Please ask your physician for a reliable diagnosis. This website is only meant as a reference.
Prof. Dr. med. Peter Altmeyer