[Bilateral elastofibroma dorsi].
BACKGROUND
Elastofibroma dorsi (EFD) is a rare form of benign soft-tissue tumour that is almost always located at the lower pole of the scapula, deep to the serratus anterior muscle. There are few reports in the dermatological literature since it rarely develops in skin or subcutaneous tissue.


METHODS
We present the case of a 59-year-old man with bilateral elastofibroma dorsi. Physical examination showed two bilateral scapular masses, better visualized in abduction or antepulsion. They were firm, painless, mobile, covered by normal skin, and measured 40/35 mm on the right and 50/55 mm on the left. Ultrasound of soft tissue and a chest CT scan showed two heterogeneous masses (tissue and fat) within the serratus anterior muscle measuring 30/15 mm on the right and 60/19 mm on the left. Histopathological study of a deep biopsy done on the right helped to confirm the diagnosis of EFD. Tumour resection was done on the right.


CONCLUSIONS
Elastofibroma dorsi is an uncommon, benign, non-encapsulated pseudo-tumour occurring in connective tissue of the infrascapular region of elderly patients. Another mass must be sought in all cases in the corresponding contralateral site since this form of tumour is often bilateral.


CONCLUSIONS
EFD must be considered in the differential diagnosis of shoulder masses in elderly patients.
Service de dermatologie, hôpital Henri-Mondor, Créteil, France. ouafahocar@yahoo.com
O
O
Hocar
V
V
Buffard
N
N
Ortonne
M
M
Bagot
D001706:Biopsy; D004547:Elastic Tissue / Q000648:ultrastructure; D005350:Fibroma / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D013194:Staining and Labeling; D013899:Thoracic Neoplasms / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography