Difference between revisions of "Benign endometrial polyp"
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==Gross== | ==Gross== | ||
*Polypoid mass in the endometrial cavity. | *Polypoid mass in the endometrial cavity. | ||
Notes: | |||
*May be large - 10 cm.<ref name=pmid25093134>{{Cite journal | last1 = Unal | first1 = B. | last2 = Doğan | first2 = S. | last3 = Karaveli | first3 = FŞ. | last4 = Simşek | first4 = T. | last5 = Erdoğan | first5 = G. | last6 = Candaner | first6 = I. | title = Giant Endometrial Polyp in a Postmenopausal Woman without Hormone/Drug Use and Vaginal Bleeding. | journal = Case Rep Obstet Gynecol | volume = 2014 | issue = | pages = 518398 | month = | year = 2014 | doi = 10.1155/2014/518398 | PMID = 25093134 }}</ref> | |||
Gross DDx: | Gross DDx: | ||
*[[Secretory phase endometrium]].<ref name=pmid16873562/> | *[[Secretory phase endometrium]].<ref name=pmid16873562/> | ||
*Pedunculated [[uterine leiomyoma|leiomyoma]]. | *Pedunculated [[uterine leiomyoma|leiomyoma]]. | ||
==Microscopic== | ==Microscopic== | ||
Features - diagnostic criteria:<ref name=pmid16873562>{{Cite journal | last1 = McCluggage | first1 = WG. | title = My approach to the interpretation of endometrial biopsies and curettings. | journal = J Clin Pathol | volume = 59 | issue = 8 | pages = 801-12 | month = Aug | year = 2006 | doi = 10.1136/jcp.2005.029702 | PMID = 16873562 | PMC = 1860448 }}</ref> | Features - diagnostic criteria:<ref name=pmid16873562>{{Cite journal | last1 = McCluggage | first1 = WG. | title = My approach to the interpretation of endometrial biopsies and curettings. | journal = J Clin Pathol | volume = 59 | issue = 8 | pages = 801-12 | month = Aug | year = 2006 | doi = 10.1136/jcp.2005.029702 | PMID = 16873562 | PMC = 1860448 }}</ref> | ||
Revision as of 17:10, 7 January 2016
| Benign endometrial polyp | |
|---|---|
| Diagnosis in short | |
 Endometrial polyp (right - fibrotic stroma). H&E stain. | |
|
| |
| LM | large blood vessels (muscular), fibrotic stroma, polypoid shape (epithelium on three sides), +/-gland dilation |
| LM DDx | adenofibroma, cervical polyp - have endocervical mucosa, lower uterine segment, endometrial carcinoma, simple endometrial hyperplasia, disordered proliferative endometrium |
| Gross | polypoid mass in the endometrial cavity |
| Site | endometrium |
|
| |
| Associated Dx | invasive breast cancer - specifically assoc. with tamoxifen |
| Clinical history | bleeding (menorrhagia) |
| Prevalence | common |
| Prognosis | benign |
| Clin. DDx | leiomyoma, other polypoid masses |
- Uterine polyp redirects here.
Benign endometrial polyp, abbreviated BEP, is a common diagnosis in endometrial specimens.
It is also simply known as endometrial polyp which is a somewhat ambiguous descriptor as not all endometrial polyps are benign.
General
- Very common.
- May be a cause of menorrhagia (heavy & long menses).
Gross
- Polypoid mass in the endometrial cavity.
Notes:
- May be large - 10 cm.[1]
Gross DDx:
- Secretory phase endometrium.[2]
- Pedunculated leiomyoma.
Microscopic
Features - diagnostic criteria:[2]
- Large blood vessels (muscular) - key feature.
- Fibrotic stroma - key feature.
- Polypoid shape - epithelium on three sides.
- May not be seen... as polyp is fragmented on removal.
Glandular changes common:[2]
- Endometrial glands may be out of phase with surrounding endometrium.
- Often proliferative.
- +/-Cystic dilation of glands/unusual shapes
- Simple endometrial hyperplasia should not be diagnosed in a polyp!
- +/-Focal gland crowding.
Notes:
- Apparently benign polyps should be examined closely at the surface for in situ & invasive malignancies.
- Stroma often cellular.
DDx:
- Adenofibroma.
- Cervical polyp - have endocervical mucosa.
- Lower uterine segment - have endocervical epithelium and lack the thick-walled blood vessels.[2]
- Endometrial carcinoma - esp. serous carcinoma of the endometrium.
- Simple endometrial hyperplasia.
- Disordered proliferative endometrium.
Images
Endometrial polyp - low mag. (WC)
Endometrial polyp - intermed. mag. (WC)
Endometrial polyp - intermed. mag. (WC)
Endometrial polyp - low mag. (WC)
IHC
- p16 stroma usually +ve.[3]
Sign out
Non-proliferative
ENDOMETRIUM, CURETTAGE: - BENIGN ENDOMETRIAL POLYP.
ENDOMETRIUM ("POLYPS"), REMOVAL:
- BENIGN ENDOMETRIAL POLYPS WITH CYSTIC GLANDULAR DILATION AND
WITHOUT APPARENT PROLIFERATIVE ACTIVITY.
Extensive surface denudation
POLYP, ENDOMETRIUM, REMOVAL: - BENIGN LARGE ENDOMETRIAL POLYP WITH EXTENSIVE DENUDATION OF THE SURFACE AND INFLAMMATION, WITHOUT APPARENT PROLIFERATIVE ACTIVITY. - BLOOD (ABUNDANT), FIBRIN AND CELLULAR DEBRIS.
Suggestive of polyp
ENDOMETRIUM, CURETTAGE: - POLYPOID NONPROLIFERATIVE ENDOMETRIUM WITH FOCALLY PROMINENT SMALL BLOOD VESSELS AND FIBROUS STROMA, SUGGESTIVE OF BENIGN POLYP. - NEGATIVE FOR HYPERPLASIA AND NEGATIVE FOR MALIGNANCY.
Proliferative
ENDOMETRIUM, CURETTAGE: - BENIGN ENDOMETRIAL POLYP WITH PROLIFERATIVE ACTIVITY.
Note:
- It is useful to comment on whether non-polypoid endometrium is proliferative (if present), esp. in menopausal women.[2]
Polyp with disordered proliferative phase in the background
ENDOMETRIUM, BIOPSY: - BENIGN ENDOMETRIAL POLYP WITH PROLIFERATIVE GLANDS AND FOCAL GLAND DILATION. - SUSPICIOUS FOR A BACKGROUND OF DISORDERED PROLIFERATIVE PHASE ENDOMETRIUM, SEE COMMENT. - STRIPPED BENIGN ENDOCERVICAL EPITHELIUM. COMMENT: The endometrium sampled is proliferative with focal gland dilation throughout. The features of a polyp (large muscular blood vessels, fibrous stroma and polypoid fragments of endometrium) are only focally present, suggesting there is a background of disordered proliferative phase endometrium. Clinical correlation is suggested.
Clinically a polyp but not apparent on histology
UTERUS (POLYP), REMOVAL: - LARGE FRAGMENT OF SECRETORY PHASE ENDOMETRIUM WITH LARGE BLOOD VESSELS, A NON-FIBROUS STROMA AND NO DISCERNIBLE SURFACE EPITHELIUM.
See also
References
- ↑ Unal, B.; Doğan, S.; Karaveli, FŞ.; Simşek, T.; Erdoğan, G.; Candaner, I. (2014). "Giant Endometrial Polyp in a Postmenopausal Woman without Hormone/Drug Use and Vaginal Bleeding.". Case Rep Obstet Gynecol 2014: 518398. doi:10.1155/2014/518398. PMID 25093134.
- ↑ 2.0 2.1 2.2 2.3 2.4 McCluggage, WG. (Aug 2006). "My approach to the interpretation of endometrial biopsies and curettings.". J Clin Pathol 59 (8): 801-12. doi:10.1136/jcp.2005.029702. PMC 1860448. PMID 16873562. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1860448/.
- ↑ Moritani, S.; Ichihara, S.; Hasegawa, M.; Iwakoshi, A.; Murakami, S.; Sato, T.; Okamoto, T.; Mori, Y. et al. (Aug 2012). "Stromal p16 expression differentiates endometrial polyp from endometrial hyperplasia.". Virchows Arch 461 (2): 141-8. doi:10.1007/s00428-012-1276-1. PMID 22772724.