Objective: The fallopian tube is now recognized as a primary source of precursor neoplastic lesions for pelvic serous adenocarcinomas. Cytologic features of fallopian tube brushings from low-risk patients have not been well described. Study Design: We describe the cytomorphology of tubal epithelium from prospectively collected experimental in vivo brushings from normal fallopian tubes of 7 low-risk patients. Liquid-based cytology slides and cell blocks were prepared and reviewed on all specimens. Results: Fifteen brush cytology specimens were obtained, ten by laparoscopy, four by hysteroscopy and one following hysterectomy and bilateral salpingo-oophorectomy on an ex vivo specimen. Variable cytologic features were documented for background, cellularity, cellular architecture, cilia, nuclear overlap, mitoses, nuclear pleomorphism, nuclear membrane changes and nucleoli. Negative P53 and Ki-67 stain results were documented in available cell blocks. Histopathologic salpingectomy findings and clinical follow-up were benign. Conclusion: Moderate nuclear pleomorphism and nuclear overlap, prominent single and multiple nucleoli and background granular debris were common challenging cytologic findings in fallopian tube brushings from low-risk patients. With experience, cellular changes can be recognized as benign. Recognition of the range of normal fallopian tube cytology should help to minimize false-positive interpretations of cytology specimens obtained in association with risk-reducing salpingo-oophorectomies.

Keywords:
Brush cytology, Fallopian tube, Female genital tract, Hysteroscopy, Screening cytology, Serous carcinoma
© 2013 S. Karger AG, Basel
2013
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