Endometrial glandular dysplasia: A putative precursor lesion of uterine papillary serous carcinoma. Part II: Molecular features

Sharon X. Liang, Setsuko K. Chambers, Liang Cheng, Shaopo Zhang, Yi Zhou, Wenxin Zheng

Research output: Contribution to journalArticle

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Abstract

Endometrial glandular dysplasia (EmGD) may be a newly defined precursor lesion of uterine papillary serous carcinoma (UPSC) by morphology. In this report, we studied molecular changes present in EmGD by the loss of heterozygosity (LOH) approach using laser capture microdissected tissue samples. Nineteen uteri showing at least 1 focus of EmGD by morphology were selected. These cases were 12 UPSC, 2 clear cell carcinomas, 1 mixed uterine papillary serous and endometrioid carcinoma, 1 uterine carcinosarcoma, 1 serous endometrial intraepithelial carcinoma (EIC), and 2 EmGD involving endometrial polyps. Seven microsatellite polymorphic DNA markers (TP53 at 17p, D1S211, and D1S162 at 1p32, D17S1323 at 17q21, D17S1330 at 17q25, D5S346 at 5q, and D2S123 at 2p) were utilized. A total of 123 laser-captured microdissection samples from 19 cases was studied with LOH method. The frequencies and patterns of LOH were analyzed and compared among benign resting endometrium (RE), EmGD, serous EIC, and UPSC. LOH was observed for at least 1 of the 7 markers in all categories of lesions, EmGD, serous EIC, and UPSC. The frequency of LOH for EmGD ranged from 4.2% to 31.3%; the range for serous EIC was 5.9% to 78.6%; and that for UPSC was 7.7% to 62.5%. The most frequent LOH in the 3 above-cited categories of lesions was identified at 17p (TP53) and 1p (D1S162). The frequency of LOH in EmGD with markers of TP53 and D1S162 was significantly higher than in RE (p < 0.05). With markers of D1S211 and D2S123, LOH in EmGD was higher than RE, approaching to a statistically significant level. Compared with foci of serous EIC and UPSC, however, the rate of LOH in EmGD was significantly lower only with TP53 locus (31.3% vs more than 60%, p < 0.05). The difference of LOH frequency with other chromosomal markers between EmGD and serous EIC/UPSC did not reach a statistically significant level. A significantly high concordant LOH pattern was found between foci of EmGD and serous EIC/UPSC (p = 0.05). We conclude that EmGD frequently shows LOH at multiple chromosomal loci, particularly at 17p and 1p. Significantly high concordant LOH frequency between EmGD and paired serous EIC or UPSC strongly suggests that EmGD is a noncancerous precursor lesion of UPSC, probably also of serous EIC. The clinical significance of EmGD needs further studies.

Original languageEnglish
Pages (from-to)319-331
Number of pages13
JournalInternational Journal of Surgical Pathology
Volume12
Issue number4
DOIs
StatePublished - Oct 2004

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Loss of Heterozygosity
Papillary Carcinoma
Carcinoma in Situ
Endometrial Neoplasms
Endometrium
Lasers
Endometrioid Carcinoma
Carcinosarcoma
Microdissection
Polyps
Genetic Markers
Microsatellite Repeats
Uterus

Keywords

  • Endometrial carcinoma
  • Endometrial glandular dysplasia (EmGD)
  • Serous EIC
  • Uterine papillary serous carcinoma

ASJC Scopus subject areas

  • Anatomy
  • Pathology and Forensic Medicine
  • Surgery

Cite this

Endometrial glandular dysplasia : A putative precursor lesion of uterine papillary serous carcinoma. Part II: Molecular features. / Liang, Sharon X.; Chambers, Setsuko K.; Cheng, Liang; Zhang, Shaopo; Zhou, Yi; Zheng, Wenxin.

In: International Journal of Surgical Pathology, Vol. 12, No. 4, 10.2004, p. 319-331.

Research output: Contribution to journalArticle

Liang, Sharon X. ; Chambers, Setsuko K. ; Cheng, Liang ; Zhang, Shaopo ; Zhou, Yi ; Zheng, Wenxin. / Endometrial glandular dysplasia : A putative precursor lesion of uterine papillary serous carcinoma. Part II: Molecular features. In: International Journal of Surgical Pathology. 2004 ; Vol. 12, No. 4. pp. 319-331.
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