Lee Yee Lin, Wu Loo Ling
Department of Paediatrics, Universiti Putra Malaysia, Selangor, Malaysia.
Department of Paediatrics, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia.
J ASEAN Fed Endocr Soc. 2019;34(1):22-28. doi: 10.15605/jafes.034.01.05. Epub 2019 May 28.
Diagnosis of Turner syndrome in Malaysia is often late. This may be due to a lack of awareness of the wide clinical variability in this condition. In our study, we aim to examine the clinical features of all our Turner patients during the study period and at presentation.
This was a cross-sectional study. Thirty-four (34) Turner patients were examined for Turner-specific clinical features. The karyotype, clinical features at presentation, age at diagnosis and physiologic features were retrieved from their medical records.
Patients with 45,X presented at a median age of 1 month old with predominantly lymphoedema and webbed neck. Patients with chromosome mosaicism or structural X abnormalities presented at a median age of 11 years old with a broader clinical spectrum, short stature being the most common presenting clinical feature. Cubitus valgus deformity, nail dysplasia and short 4th/5th metacarpals or metatarsals were common clinical features occurring in 85.3%-94.1% of all Turner patients. Almost all patients aged ≥2 years were short irrespective of karyotype.
Although short stature is a universal finding in Turner patients, it is usually unrecognised till late. Unlike the 45,X karyotype, non-classic Turner syndrome has clinical features which may be subtle and difficult to discern. Our findings underscore the importance of proper serial anthropometric measurements in children. Awareness for the wide spectrum of presenting features and careful examination for Turner specific clinical features is crucial in all short girls to prevent a delay in diagnosis.
马来西亚对特纳综合征的诊断往往较晚。这可能是由于对该病症广泛的临床变异性缺乏认识。在我们的研究中,我们旨在研究所有特纳综合征患者在研究期间及初诊时的临床特征。
这是一项横断面研究。对34例特纳综合征患者进行了特纳综合征特异性临床特征检查。从他们的病历中获取了核型、初诊时的临床特征、诊断年龄和生理特征。
核型为45,X的患者初诊时的中位年龄为1个月,主要表现为淋巴水肿和蹼颈。染色体嵌合体或X染色体结构异常的患者初诊时的中位年龄为11岁,临床谱更广,身材矮小是最常见的初诊临床特征。肘外翻畸形、指甲发育异常以及第4/5掌骨或跖骨短小是常见的临床特征,在所有特纳综合征患者中出现的比例为85.3%-94.1%。几乎所有≥2岁的患者无论核型如何均身材矮小。
虽然身材矮小是特纳综合征患者的普遍表现,但通常直到晚期才被发现。与45,X核型不同,非典型特纳综合征的临床特征可能较为隐匿,难以辨别。我们的研究结果强调了对儿童进行适当的系列人体测量的重要性。对所有身材矮小女童而言,认识到广泛的临床表现特征并仔细检查特纳综合征特异性临床特征对于防止诊断延误至关重要。