Ectopic decidua and metastatic squamous carcinoma: Presentation in a single pelvic lymph node
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This case report describes a single pelvic lymph node containing both ectopic decidua and metastatic squamous carcinoma, highlighting key morphologic features to distinguish these two entities.
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Abstract
The presence of ectopic decidua in pelvic lymph nodes from patients with squamous carcinoma of the cervix makes evaluation for metastatic disease difficult due to the light microscopic similarity between decidua and sheets of squamous epithelial cells. A patient is present in whom decidualized endometriosis was intimately associated with metastatic moderately differentiate squamous carcinoma in a single pelvic lymph node. This phenomenon afforded an excellent opportunity to study the unique morphologic features that distinguish these two entities. A prior report of this kind was not found. In the absence of obvious squamous differentiation (i.e., intercellular bridges, dyskeratosis, and keratin "pearl" formation), as is frequently the case with squamous carcinoma of the cervix, the light microscopic features that are most useful in distinguishing squamous carcinoma from decidua include the presence of well-defined nests of cohesive cells, nuclear hyperchromasia, and cellular pleomorphism.
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Too few in-corpus citations on either side for a chart; here are the lists.
Cites (2)
- Pelvic Endometriosis 1982
- Carcinoma of cervix associated with endometriosis of lymph node. A case report. 1978
Cited by (4)
- La déciduose ectopique : variabilités de présentation pendant la grossesse et diagnostics différentiels 2012
- Deciduosis causing perforating appendicitis in the early postpartum period following caesarean section 2008
- Decidualization of intranodal endometriosis in a postmenopausal woman. 2015
- Ectopic Decidua Suspicious Of Malignancy In Pregnancy: A Case Report 2005
References (5)
- Carcinoma of cervix associated with endometriosis of lymph node. A case report. via openalex
- Pelvic Endometriosis via openalex
- W1542175111 via openalex
- W2018185463 via openalex
- W2093606718 via openalex
Cited by (4)
- Decidualization of intranodal endometriosis in a postmenopausal woman. 2015
- La déciduose ectopique : variabilités de présentation pendant la grossesse et diagnostics différentiels 2012
- Deciduosis causing perforating appendicitis in the early postpartum period following caesarean section 2008
- Ectopic Decidua Suspicious Of Malignancy In Pregnancy: A Case Report 2005
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