Juxta-articular Myxoma of the Hip: A Rare Pediatric Tumor

Abstract

Juxta-articular myxoma (JAM) is a very rare myxoid tumor in pediatric age. JAM is frequently located at large joints, particularly in the knee, and most lesions present as palpable swelling sometimes associated with pain or tenderness. Only three cases of pediatric JAM have been reported in the literature to date. We describe a case of JAM in a 12-year-old boy, characterized by several unique aspects related to age, site of onset, size, and associated symptoms.

The Viscous Juncture-Juxta Articular Myxoma

“…Disease Characteristics Juxta-articular myxoma is commonly associated with large joints such as the knee which is incriminated in a majority (88%) of instances. Additionally, elbow, shoulder, ankle, wrist, hip or joints of the hand may be implicated [2,3]. Tumour magnitude generally varies from 0.6 centimetres to 12 centimetres although a majority of neoplasms are beneath <5 centimetres.…”

“…Tumour magnitude generally varies from 0.6 centimetres to 12 centimetres although a majority of neoplasms are beneath <5 centimetres. The neoplasm is frequently associated with conditions such as meniscal tear and osteoarthritis (2,3). Disease emergence usually occurs within the third to fifth decades.…”

“…Children are exceptionally incriminated wherein the neoplasm is usually discerned within the knee joint or wrist. A male predominance is observed with a male to the female proportion of nearly 3:1 [2,3]. Although the tumefaction is non-destructive or locally destructive, an estimated one third (34%) of neoplasms are associated with localized tumour reoccurrence.…”

“…Although the tumefaction is non-destructive or locally destructive, an estimated one third (34%) of neoplasms are associated with localized tumour reoccurrence. Of controversial genesis, juxta-articular myxoma may be engendered as a posttraumatic consequence or an arthritic disease [2,3]. Clinical Elucidation Pain can occur in the absence of clinically evident neoplasm although tumefaction can arise in the absence of pain.…”

“…Clinical Elucidation Pain can occur in the absence of clinically evident neoplasm although tumefaction can arise in the absence of pain. On account of localized tissue destruction associated with the neoplasm, pain or nerve palsy can manifest [2,3]. The occurrence of a painful lesion requires differentiation from localized or referred hip pain arising due to concomitant disorders of knee or foot.…”