XXXX : Report of its first incidence in the Middle East and a literature review.

@entity1 @entity82 @entity66 @entity174 @entity5 @entity3291 @entity4262 @entity244 @entity158
INTRODUCTION: @entity244 , a rare benign disease with indolent course, is best described as an association between soft tissue @entity3291 and @entity82 of the bones. In this report, we describe the first case of this syndrome from Saudi Arabia. CASE PRESENTATION: A 24-year-old male in  overall good health status, presented with progressive left knee swelling over 6 years with no other associated symptoms. The swelling measured 5  cm in diameter, with smooth surface, and soft palpable texture. Radiological examination followed by histopathological examination of the excised mass confirmed our diagnosis of @entity244 . The @entity1 was closely followed up with systematic examination with no recurrence. DISCUSSION: @entity82 , soft tissue @entity3291 and @entity66 like @entity4262 characterize @entity244 . Furthermore, @entity82 is found to be associated with GNA1S gene mutation. Many @entity1 can have asymptomatic course of the disease but may present with pathological @entity174 , @entity158 , and limitation of movement when the @entity3291 is near the joints or just simple cosmetically disturbing swelling like in our case. CONCLUSION: @entity1 with such presentation need to be investigated thoroughly to rule out associated diseases and to evaluate the extent of such pathology. The improvement of radiological modalities can help in narrowing the differential diagnosis and following the @entity1 to early detect the recurrence or any @entity5 .
