Poland syndrome | |
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Other names | Poland's syndrome, Poland's syndactyly, Poland sequence, Poland's anomaly, unilateral defect of pectoralis major and syndactyly of the hand[1] |
Missing right breast and right pectoralis major muscle in Poland syndrome[2] | |
Specialty | Medical genetics |
Symptoms | Underdeveloped chest muscle and short webbed fingers on one side[3][1] |
Usual onset | At birth[1] |
Causes | Unknown[1] |
Diagnostic method | Based on symptoms[4] |
Differential diagnosis | Moebius syndrome, Hanhart syndrome[4] |
Treatment | Surgical correction[3] |
Frequency | 1 in 20,000 newborns[1] |
Poland syndrome is a birth defect characterized by an underdeveloped chest muscle and short webbed fingers on one side of the body.[3][1] There may also be short ribs, less fat, and breast and nipple abnormalities on the same side of the body.[1] Typically, the right side is involved.[3] Those affected generally have normal movement and health.[1]
The cause of Poland syndrome is unknown.[1] One theory is that it is due to disruption of blood flow during embryonic development.[1] It is generally not inherited, and no genes that contribute to the disorder have been identified.[1] Diagnosis of Poland syndrome is based on its symptoms.[4] Often, those with the syndrome remain undiagnosed, and some may not realize they have it until puberty.[3]
Treatment of Poland syndrome depends on its severity and may include surgical correction.[3] The syndrome affects about 1 in 20,000 newborns, and males are affected twice as often as females.[1] It is named after English surgeon Sir Alfred Poland, who described the condition when he was a student in 1841.[4][5]