小児悪性腫瘍に対する化学放射線療法の既往をもつ後天性示指斜指症

抄録

 Clinodactyly commonly presents as a radial inclination of the little finger and cases involving the index finger are relatively rare. We report a case of a 14-year-old girl who was diagnosed with clinodactyly of the index finger at 8 years of age. She underwent osteotomy at 14 years of age leading to improvement of angulation (40º to 20º) and digital pinching. The patient recovered uneventfully without recurrence. The patient had no medical history of common causes of acquired clinodactyly including trauma, frostbite, inflammatory arthritis, and bone tumors. She was diagnosed with malignancy at 2 years of age, for which she underwent multimodal oncological therapy. The patient developed endocrine dysfunction, delayed skeletal maturation, and stature deficits. Our findings suggest that clinodactyly may have developed as a sequela of chemoradiotherapy.