Difference between revisions of "Adenocarcinoma"

From Libre Pathology
Jump to navigation Jump to search
 
(9 intermediate revisions by the same user not shown)
Line 1: Line 1:
[[Image:Lung adenocarcinoma - pleural fluid -- very high mag.jpg|thumb|right|250px|Adenocarcinoma (lung). Pleural fluid specimen. [[Pap stain]]. (WC)]]
[[Image:Colorectal adenocarcinoma cytology low mag.jpg|thumb|right|250px|Adenocarcinoma (colorectal). [[Field stain]]. (WC)]]
[[Image:Colorectal adenocarcinoma -- high mag.jpg|thumb|right|250px|[[Colorectal adenocarcinoma]]. [[H&E stain]]. (WC)]]
'''Adenocarcinoma''' is a form of [[cancer]] that arises from glandular tissue.  Adenocarcinoma can arise in many sites.   
'''Adenocarcinoma''' is a form of [[cancer]] that arises from glandular tissue.  Adenocarcinoma can arise in many sites.   


Line 5: Line 8:
=Types of adenocarcinoma=
=Types of adenocarcinoma=
==Site specific==
==Site specific==
Below is an incomplete list of adenocarcinomas.
===Gastrointestinal pathology===
===Gastrointestinal pathology===
====Esophagus====
====Esophagus====
Line 69: Line 73:
*Gland forming - round/ovoid/tubular spaces.
*Gland forming - round/ovoid/tubular spaces.
*Eccentric nucleus.
*Eccentric nucleus.
*Moderate cytoplasm.
*Moderate cytoplasm +/- vacuoles.
*+/-Prominent nucleolus.
*+/-Prominent nucleolus.
*+/-[[Nuclear atypia]] - dependent on type/site.
*+/-[[Nuclear atypia]] - dependent on type/site.
Line 75: Line 79:
DDx:
DDx:
*Carcinoma (poorly differentiated).
*Carcinoma (poorly differentiated).
*[[Sarcoma]].
*[[Sarcoma]], esp. [[epithelioid sarcomas]].
*Benign glands.
*Benign glands.
**[[Endometriosis]].
**[[Endometriosis]].
Line 82: Line 86:


===Grading===
===Grading===
Special grading systems exists based on the primary site:
*[[Nottingham grade]] for [[invasive breast cancer]]
*[[Prostate cancer grading|WHO grade groups]] for [[prostate cancer]].
*Others.
Adenocarcinomas are often graded by their glandular component:<ref>URL: [http://www.cap.org/apps/docs/committees/cancer/cancer_protocols/2011/Esophagus_11protocol.pdf http://www.cap.org/apps/docs/committees/cancer/cancer_protocols/2011/Esophagus_11protocol.pdf]. Accessed on: 6 April 2012.</ref>
Adenocarcinomas are often graded by their glandular component:<ref>URL: [http://www.cap.org/apps/docs/committees/cancer/cancer_protocols/2011/Esophagus_11protocol.pdf http://www.cap.org/apps/docs/committees/cancer/cancer_protocols/2011/Esophagus_11protocol.pdf]. Accessed on: 6 April 2012.</ref>
*Grade 1: >95% of tumour glandular.
*Grade 1: >95% of tumour glandular.
Line 88: Line 97:


=See also=
=See also=
*[[Carcinoma]].
*[[Adenocarcinoma in situ]].
*[[Adenocarcinoma in situ]].
*[[Pathologic fracture]].
*[[Pathologic fracture]].

Latest revision as of 14:44, 8 November 2019

Adenocarcinoma (lung). Pleural fluid specimen. Pap stain. (WC)
Adenocarcinoma (colorectal). Field stain. (WC)

Adenocarcinoma is a form of cancer that arises from glandular tissue. Adenocarcinoma can arise in many sites.

Adenocarcinoma not otherwise specified, also adenocarcinoma NOS, is a non-specific malignant diagnosis that without further information is not very useful for treatment decisions.

Types of adenocarcinoma

Site specific

Below is an incomplete list of adenocarcinomas.

Gastrointestinal pathology

Esophagus

Stomach

Duodenum

Ampulla of Vater

Pancreas

Gallbladder

Colon and rectum

Other

Lung

Salivary gland

Gynecologic pathology

Ovary

Endometrium

Cervix

Genitourinary pathology

Prostate

Testis

Urinary bladder

General type

Microscopic (generic)

Features:

  • Gland forming - round/ovoid/tubular spaces.
  • Eccentric nucleus.
  • Moderate cytoplasm +/- vacuoles.
  • +/-Prominent nucleolus.
  • +/-Nuclear atypia - dependent on type/site.

DDx:

Grading

Special grading systems exists based on the primary site:

Adenocarcinomas are often graded by their glandular component:[1]

  • Grade 1: >95% of tumour glandular.
  • Grade 2: 50-95% of tumour glandular.
  • Grade 3: <50% of tumour glandular.

See also

References