Peripheral pulmonary carcinoid tumour

Peripheral pulmonary carcinoid tumour refer to a subtype of pulmonary carcinoid tumours that arise within the periphery of the lung. They are considered less common than the more centrally located bronchial carcinoid tumours

Many patients tend to be asymptomatic  2. Presentation with carcinoid syndrome is extremely rare 6

Peripheral pulmonary carcinoid tumours are considered a neuroendocrine tumour of the lung. They can be typical (well differentiated - common) or atypical (more aggressive - uncommon). 

  • smoking: rate of carcinoid tumours is similar between smokers and nonsmokers, although there is increased incidence of atypical subtype amongst smokers 5,6

Most are discovered as an incidental rounded solitary pulmonary nodule. The size at diagnosis can vary but usually reported to be range around 10-30mm 2. Many have lobulated margin with an average Hounsfield value on post contrast imaging at around 50 2. Imaging features are often non specific and tissue diagnosis is essential in determining diagnosis.

Most peripheral carcinoid tumours tend to involve a subsegmental bronchus 2

May have a sensitivity of around 75% 7.

Usually avid and useful for diagnosis 8.

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Article information

rID: 20780
System: Chest
Section: Pathology
Tag: cases
Synonyms or Alternate Spellings:
  • Peripheral pulmonary carcinoid tumours
  • Peripheral pulmonary carcinoid tumor
  • Peripheral pulmonary carcinoid tumors

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    Case 1: atypical
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