Talc and carcinoma of the ovary and cervix

Our plain-English summary of Talc and carcinoma of the ovary and cervix, by W.J. Henderson, C.A. Joslin, A.C. Turnbull, et al (The Journal of Obstetrics and Gynaecology of the British Commonwealth, 1971).

The study

• Authors: W.J. Henderson, C.A. Joslin, A.C. Turnbull, K. Griffiths
• Journal: The Journal of Obstetrics and Gynaecology of the British Commonwealth
• Published: 1971;78(3):266-72
• Cited by: 93 articles, as counted by NIH iCite
• Read it: PubMed · Publisher
• In J-M's library: Johns-Manville's company medical library held a copy (J-M no. 002443).

In plain English

The authors used an electron-microscope method called extraction-replication to look for mineral particles in tissue from patients with cancer of the ovary or cervix. No asbestos particles were found in any tissue studied. Particles identified as talc were found deep within 10 of 13 ovarian tumours (about 75 per cent) and 12 of 21 cervical tumours (about 50 per cent). Talc was also found in 5 of 12 samples of "normal" ovarian tissue from patients with breast cancer. In one patient with endometrial cancer, many talc particles were seen in the primary tumour but none in the tumour that had spread to the ovary. The authors noted that the method cannot tell talc from anthophyllite asbestos, that the particles were tiny, that only small regions could be examined, and that particles could easily be missed. A preliminary analysis showed magnesium and silicon in the crystals. The authors concluded that these preliminary observations could not incriminate talc as a primary cause of cervical or ovarian cancer, but that a link with other predisposing factors should not be disregarded and further study was needed.

We wrote this plain-English summary from the full article with the help of AI, and a second AI model checked each sentence against the article. It is not the authors' wording; the abstract and the article are their own account.

What the study did and found

• Design: Laboratory electron-microscopy study of tumour tissue samples (descriptive case series), using an extraction-replication technique
• Who was studied: Tissue from patients with ovarian cancer (13 tumours) and cervical cancer (21 tumours), plus 12 'normal' ovarian tissues from patients with breast cancer and one patient with endometrial carcinoma. The work was done at institutions in Cardiff, Wales, with some sections supplied from Glasgow. The dates of tissue collection are not stated.
• Exposure: Mineral particles (asbestos and talc) found within the tissue. The article does not describe the patients' own use of talc or exposure history. The authors state that anthophyllite asbestos cannot be told apart from talc by this technique.
• Main results:
  • No asbestos particles were found in any of the tissue studied
  • Talc particles were identified in approximately 75 per cent (10 of 13) of the ovarian tumours, found deep within the tumour tissue
  • Talc particles were found in approximately 50 per cent (12 of 21) of the cervical tumours examined. These particles were generally larger than those in the ovarian tumours, with crystals as large as 5 microns.
  • Talc particles were found in 5 of 12 'normal' ovarian tissues removed from patients with breast cancer
  • In one patient, many talc particles were found in a primary endometrial carcinoma, but none in the secondary tumour in the ovary
  • Preliminary microanalysis showed that the crystals contained magnesium and silicon (talc is a magnesium silicate)
• The authors' conclusion: The authors concluded that talc could not be incriminated as a primary cause of cancer of the cervix or ovary on these preliminary observations. They added that a possible relation of talc to other predisposing factors should not be disregarded, and that further investigations were required.
• Limitations the authors state:
  • The particles were extremely small, and only small regions of the tumour tissue could be studied
  • Evaluating a replica requires extensive high-magnification study, and particles could easily be missed
  • The technique cannot distinguish talc from anthophyllite asbestos
  • The observations were described as preliminary

Topics

The National Library of Medicine indexes this study under subjects our site covers: Ovarian cancer, Talc and vermiculite.

Medical terms in this study, explained in our Lexicon: Talc, Carcinoma.

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