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Genova et al. Mini-invasive Surg 2020;4:20 I http://dx.doi.org/10.20517/2574-1225.2019.47 Page 7 of 9

[56]
Notably, one of the largest was published in 2020 by Hu et al. and included only 20 patients. Eleven
of them (55%) were operated for mid rectal cancer and nine (45%) for low rectal cancer. The distance
between tumor to anal verge was 6.0 ± 2.7 cm (mean ± SD), the operative team was 172.3 ± 24.2 min (mean
± SD), and the blood loss 82.0 ± 107.1 mL (mean ± SD). No conversion was reported, the postoperative
complication rate was 35%, and the length of hospital stay was 8.8 ± 4.2 days. In 90% of cases, TEM was
complete, and the number of lymph nodes harvested per specimen was 18.7 ± 6.3 (mean ± SD). The distal
margin length was 3.1 ± 1.3 cm. Positive CRM was found in 15% of cases (n = 3).

CONCLUSION
TAMIS represents a valid therapeutic option in the surgical treatment of benign and malignant lesions of
the rectum compared to TEM. Robotic transanal surgery soon developed after the introduction of TAMIS
and consists in associating the use of robotic surgical systems to transanal disposable platforms. It proved to
be safe and effective, but the data currently available in the literature do not show clear statistical advantages
compared to conventional TAMIS. Therefore, further studies will be necessary.

DECLARATIONS
Authors’ contributions
Conception: Genova P, Memeo R, Brunetti F
Literature review: Genova P
Writing: Genova P
Revision: Genova P, Memeo R, Brunetti F

Availability of data and materials
Not applicable.

Financial support and sponsorship
None.

Conflicts of interest
All authors declared that there are no conflicts of interest.

Ethical approval and consent to participate
Not applicable.

Consent for publication
Not applicable.

Copyright
© The Author(s) 2020.

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