Last reviewed: October 2017
Last updated: November  2017

Summary

Differentials

Common

  • Lung cancer
  • Bronchiectasis
  • Lung abscess
  • Empyema
  • Congenital heart disease
  • Infective endocarditis
  • Hypersensitivity pneumonitis (extrinsic allergic alveolitis)

Uncommon

  • Cystic fibrosis
  • Interstitial pulmonary fibrosis
  • Sarcoidosis
  • Asbestosis
  • Pleural mesothelioma
  • Cavitating pulmonary TB
  • Pulmonary metastases
  • Atrial myxoma
  • Axillary artery aneurysm
  • Brachial arteriovenous malformations
  • Thyroid acropachy
  • Acromegaly
  • Severe secondary hyperparathyroidism
  • Hodgkin's lymphoma
  • Disseminated chronic myelogenous leukaemia
  • Ulcerative colitis
  • Crohn's disease
  • Primary biliary cirrhosis
  • Cirrhosis
  • Thyroid cancer
  • Thymus cancer
  • Lipoid pneumonia
  • Pulmonary artery sarcoma
  • Ulcerative oesophagitis
  • Achalasia
  • Coeliac disease
  • Tropical sprue
  • Leiomyoma of the oesophagus
  • Familial clubbing
  • Pachydermoperiostosis (primary hypertrophic osteoarthropathy)
  • Secondary hypertrophic osteoarthropathy
  • Palmoplantar keratoderma
  • Pregnancy
  • Pseudoclubbing
  • Myelofibrosis

Contributors

Authors VIEW ALL

Murlidhar Rajagopalan

Senior Consultant Dermatologist and Coordinator

Apollo Hospitals

Chennai

India

Disclosures

MR declares that he has no competing interests.

Robert A. Schwartz

Professor & Head

Dermatology

New Jersey Medical School

Newark

NJ

Disclosures

RAS declares that he has no competing interests.

Peer reviewers VIEW ALL

Associate Professor (Clinical)

Department of Medicine

University of Utah

Director

Pulmonary and Critical Care Research

IHC Urban South

Utah Valley Pulmonary Clinic

UT

Disclosures

KS declares that he has no competing interests.

Assistant Professor of Medicine

Director

Rheumatology Fellowship

University of Connecticut Health Center

Farmington

CT

Disclosures

SL declares that he has no competing interests.

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