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Endometrial biopsy in women with abnormal uterine bleeding: inadequate and unassessable categorisation is not clinically relevant
  1. Ayman A A Ewies1,
  2. Kadry A A Shaaban1,
  3. Reena Merard2,
  4. Ulises Zanetto2
  1. 1Department of Gynaecology, Sandwell and West Birmingham Hospitals NHS Trust, Birmingham, UK
  2. 2Department of Histopathology, Sandwell and West Birmingham Hospitals NHS Trust, Birmingham, UK
  1. Correspondence to Dr Ayman A A Ewies, Department of Gynaecology, Sandwell and West Birmingham Hospitals NHS Trust, Maternity Block, Dudley Road, Birmingham B18 7QH, UK; aymanewies{at}hotmail.com, ayman.ewies{at}nhs.net

Abstract

Aims Inadequate endometrial biopsy comprises a dilemma for gynaecologists and histopathologists alike. This study was conducted to assess the clinical merit of classifying scant endometrial biopsy into inadequate and unassessable using McCluggage criteria.

Methods We retrospectively classified 268 endometrial biopsies, initially reported as inadequate, into inadequate (n=74) and unassessable (n=174) using McCluggage criteria after excluding 20 cases; all taken from patients aged ≥50 years with abnormal uterine bleeding attending Sandwell and West Birmingham Hospitals, UK from 1 January 2007 until 30 September 2012. The electronic clinical records were reviewed to find out the consequent clinical decisions and final outcomes. The follow-up period was 15 months after including the last patient.

Results The median age was 57 years (range: 50–97), and the median number of visits to hospital till the diagnosis was achieved was 2 (range: 1–4). The final diagnosis of endometrial hyperplasia or cancer was reported in 9 cases; 5 (7.1%) with an initial finding of inadequate and 4 with unassessable (2.4%); the difference was statistically insignificant (p=0.13). More patients in the inadequate category (82.4%) underwent further investigations when compared with the unassessable category (68.4%); the difference was statistically significant (p=0.029). There was no statistically significant difference in the inadequate to unassessable ratio when the endometrial thickness was ≥5 mm or <5 mm within the Pipelle group (p=0.46) or the curettage group (p=0.34).

Conclusions Our findings suggest that categorising scant endometrial specimens into inadequate or unassessable has no clinical implications. The gynaecologist should interpret the histopathology report in the light of clinical scenario.

  • Endometrium
  • Gynaecological Pathology
  • Uterus

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