Touch imprint cytology is useful for the intraoperative pathological diagnosis of PitNETs

Author:

Tanabe Noriaki1,Inoshita Naoko1ORCID,Ishida Atsushi1,Kato Masataka1,Yoshimoto Haruko1,Shiramizu Hideki1,Suga Hidetaka2,Tateno Toru3,Ohashi Kenichi4,Yamada Shozo1

Affiliation:

1. Moriyama Memorial Hospital

2. Nagoya University Graduate School of Medicine

3. University of Alberta

4. Tokyo Medical and Dental University

Abstract

Abstract Touch imprint cytological (TIC) preparation and frozen section (FS) procedures are essential for intraoperative pathological diagnosis (IPD). They are invaluable tools for therapeutic decision-making, helping surgeons avoid under or overtreatment of patients. Pituitary neuroendocrine tumors (PitNETs) are generally small, slow-growing tumors with low-grade malignancy located at the base of the skull, where it is impossible to maintain a wide tumor margin. Therefore, transsphenoidal surgery (TSS) should be performed with necessary caution, and with sufficient and minimal resection. Thus, this study aimed to evaluate the diagnostic accuracy of TIC for the diagnosis of PitNET and determine its ability to accurately evaluate the surgical margin compared to the FS procedure. A total of 104 fresh specimens from 28 patients who underwent TSS for PitNETs were examined using TIC and FS. TIC specimens were categorized according to the cell attachment pattern. The rich and diffusely attached neuroendocrine cells were all from PitNETs. In contrast, no rich or diffuse cell attachments were observed in any non-tumoral endocrine cells. In conclusion, recognizing a pattern of endocrine cell adherence is highly effective in IPD in order to certify the existence of a PitNET component.

Publisher

Research Square Platform LLC

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