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This abstract is assigned to session SBO-BOG Posters session >> in Poster area - Foyer +1

Title

Mesectodermal leiomyoma: current diagnostic approach and management

Purpose	Mesectodermal leiomyoma is a rare benign intraocular tumor, on which mostly only single case reports (nr:~60), based on coincidental histopathological findings, have been published. Clear diagnostic or therapeutic guidelines have not been published yet.
Methods	We studied retrospectively 5 consecutive leiomyoma cases, observed or treated since 2001. We present their clinical features, differential diagnostic approach, and management.
Results	Referral diagnosis of all cases was uveal melanoma. All tumors were well delineated and originated in the ciliary body (4) or anterior choroid (1). Median thickness was 7.6 mm (4.0-12.6), with low internal reflectivity and a supraciliary/-choroidal location on US examination (UBM/20/10 MHz). Suspicion of leiomyoma (4) or melanocytoma (1) had motivated incisional biopsy as a diagnostic approach. Management consisted of specific surgical incision (3) or periodic observation (2).
Conclusion	Mesectodermal leiomyoma has distinct clinical features, justifying incisional biopsy before planning further management adapted to its benign nature.

Author 1

Last name	SCHALENBOURG
Initials	A
Department	Jules Gonin Eye Hospital
City	Lausanne (VD), CH

Author 2

Last name	MORMILE
Initials	S
Department	Jules Gonin Eye Hospital
City	Lausanne (VD), CH

Author 3

Last name	UFFER
Initials	S
Department	Jules Gonin Eye Hospital
City	Lausanne (VD), CH

Author 4

Last name	ZOGRAFOS
Initials	L
Department	Jules Gonin Eye Hospital
City	Lausanne (VD), CH