Document Detail

Diagnosis of digital clubbing by high-frequency ultrasound imaging.
MedLine Citation:
PMID:  23278602     Owner:  NLM     Status:  In-Data-Review    
Background  Current methods to diagnose clubbing have drawbacks. This study was done to test a novel and convenient method for the diagnosis of digital clubbing using high-frequency ultrasound. Methods  Index fingers from a healthy control group without digital clubbing and a patient group with digital clubbing were examined by ultrasound. The morphology of the clubbing fingers was observed. The soft tissue depth under the nail (SDUN), interphalangeal depth (IPD), and distal phalangeal depth (DPD) were measured. The ratio of DPD and IPD (DPD/IPD) was calculated. Results  Nails, soft tissue under nails, digital bones, and digital joints were clearly observed by ultrasound. The mean SDUN was 0.16 ± 0.01 cm for the control group and 0.284 ± 0.02 cm for the patient group (P < 0.01). Ultrasound images were assessed by naked eye and ultrasound measurement. SDUNs in the patient group were larger than SDUNs in the healthy control group. The DPDs were larger than IPDs in the patient group, while in the healthy control group, DPDs were smaller than IPDs. The mean DPD/IPD ratio was 0.86 ± 0.04 cm in the control group and 1.077 ± 0.11 cm in the patient group (P < 0.05). Conclusion  We present a new, easy, convenient method for the diagnosis of digital clubbing using ultrasound. We also discovered a new parameter for the diagnosis of clubbing fingers and identification of pseudodigital clubbing, the SDUN. The increased SDUN might be taken as an early sign of digital clubbing.
Homagni Sikha Roy; Zhigang Wang; Haitao Ran; Weixiang Song; Yuanyi Zheng
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  International journal of dermatology     Volume:  52     ISSN:  1365-4632     ISO Abbreviation:  Int. J. Dermatol.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-01-02     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0243704     Medline TA:  Int J Dermatol     Country:  England    
Other Details:
Languages:  eng     Pagination:  1-5     Citation Subset:  IM    
Copyright Information:
© 2013 The International Society of Dermatology.
Second Affiliated Hospital Institute of Ultrasound Imaging, Chongqing Medical University, China 400010.
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