Irregularity of the Distal Femoral Metaphysis Simulating Malignancy

Cortical desmoids in adolescent top-level athletes

“…Cortical desmoid represents a benign cortical irregularity ( 1 ), typically located at the posterior-medial condyle of the femur ( 2 ). Although it is rarely described in the orthopedic and sports-medicine literature ( 3 ), knowledge is of high clinical relevance ( 4 ). It has been used as synonym with distal femoral cortical irregularity (DFCI) ( 5 ), avulsive cortical irregularity, cortical abrasion, periosteal and subperiosteal desmoid ( 6 ), and as a variant of periostitis ossificans ( 1 ).…”

Scaphoid Cortical Desmoid in a Snowboarder With Persistent Wrist Pain

“…ACI is a benign condition that mimics malignancy radiologically and microscopically [9,10]. It is therefore important not to mistake this lesion for osteosarcoma or fibrosarcoma [8] to avoid unnecessary biopsy [3].…”

“…It is usually asymptomatic and incidentally found on radiological images; it should not be misinterpreted as a desmoid tumor, which is an aggressive benign fibroblastic tumor [1]. The knowledge of this entity is of high clinical importance, as it may resemble more aggressive processes such as malignancy, leading to unnecessary procedures [3]. ACI is more commonly found in adolescents [4] at the medial supracondylar femur [5]; however, it has also been reported in the deltoid, latissimus dorsi [6], adductor magnus muscles [4], and ischial tuberosity [7].…”