Besson MDR, Taiarol MDS, Fernandes EB, Ghiorzi IB, Nunes MR, Zen PRG, Rosa RFM. Chromosomal abnormalities detected by karyotyping among patients with secondary amenorrhea: a retrospective study.
SAO PAULO MED J 2023;
141:e2022426. [PMID:
37042862 PMCID:
PMC10085534 DOI:
10.1590/1516-3180.2022.0426.r1.14012023]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 01/14/2023] [Indexed: 04/13/2023] Open
Abstract
BACKGROUND
Chromosomal abnormalities (CAs) have been described in patients with secondary amenorrhea (SA). However, studies on this association are scarce.
OBJECTIVES
To evaluate the frequency and types of CAs detected by karyotyping in patients with SA.
DESIGN AND SETTING
This retrospective study was performed in a reference clinical genetic service in South Brazil.
METHODS
Data were obtained from the medical records of patients with SA who were evaluated between 1975 and 2022. Fisher's bicaudate exact test and Student's t-test were used, and P < 0.05 was considered significant.
RESULTS
Among 43 patients with SA, 14 (32.6%) had CAs, namely del (Xq) (n = 3), 45,X (n = 2), 46,X,r(X)/45,X (n = 2), 46,XX/45,X (n = 1), 46,X,i(q10)/45,X (n = 1), 47,XXX (n = 1), 46,XX/47,XXX (n = 1), 46,XX/47,XX,+mar (n = 1), 45,XX,trob(13;14)(q10;q10)/46,XXX,trob(13;14)(q10;q10) (n = 1), and 46,XX,t(2;21)(q23;q11.2) (n = 1). Additional findings were observed mostly among patients with CA compared with those without CA (P = 0.0021). No difference in the mean age was observed between the patients with SA with or without CAs (P = 0.268025).
CONCLUSIONS
CAs are common among patients with SA, especially those with short stature and additional findings. They are predominantly structural, involve the X chromosome in a mosaic, and are compatible with the Turner syndrome. Patients with SA, even if isolated, may have CAs, particularly del (Xq) and triple X.
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