Atypical pulmonary carcinoid tumour
Atypical pulmonary carcinoid tumour is a subtype of pulmonary carcinoid tumor. It is an uncommon low-grade malignant lung mass that is most often in the central airways of the lung. It is also known as "atypical lung carcinoid tumour", " atypical lung carcinoid" or "moderately differentiated neuroendocrine carcinoma".
| Atypical pulmonary carcinoid tumour | |
|---|---|
 | |
| Atypical pulmonary carcinoid. H&E stain. | |
| Specialty | Oncology |
It is a more aggressive than typical carcinoid tumors: nodal metastases in 70% vs. 5%. The 5 year survival is 49-69%.
Atypical carcinoid tumors have increased mitotic activity (2-10 per 10 HPF), nuclear pleomorphism or foci of necrosis.
Morphological differential diagnosis
Atypical carcinoid of the lung exhibiting endobronchial growth, increased mitotic activity was seen (2-10 per 10 HPF). H&E stain.
- Typical pulmonary carcinoid tumor
- Typical pulmonary carcinoid lacks comedo-like necrosis, and has < 0.2 mitotic figures/HPF.
gollark: Turns out *some* versions of babel do... actually include a picture of Guy Fieri.
gollark: https://medium.com/s/silicon-satire/i-peeked-into-my-node-modules-directory-and-you-wont-believe-what-happened-next-b89f63d21558I think this is a joke though.
gollark: Monads are like monads but monads.
gollark: Tree is a type. Node is a constructor.
gollark: Because arbitrary decisions.
References
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.