Endoscopy 2019; 51(04): S137
DOI: 10.1055/s-0039-1681572
ESGE Days 2019 ePoster podium presentations
Friday, April 5, 2019 13:00 – 13:30: Colon: resection 1 ePoster Podium 2
Georg Thieme Verlag KG Stuttgart · New York

ENDOSCOPIC TREATMENT OF RECTAL NEUROENDOCRINE TUMORS IN A 12 YEAR RETROSPECTIVE SINGLE CENTER STUDY

K Dąbkowski
1   Department of Gastroenterology, Pomeranian Medical University, Szczecin, Poland
,
A Białek
1   Department of Gastroenterology, Pomeranian Medical University, Szczecin, Poland
,
N Rusiniak-Rossińska
1   Department of Gastroenterology, Pomeranian Medical University, Szczecin, Poland
,
K Michalska
1   Department of Gastroenterology, Pomeranian Medical University, Szczecin, Poland
,
B Kos-Kudła
2   Department of Pathophysiology and Endocrinology, Katowice, Poland, Medical University of Silesia, Katowice, Poland
,
T Starzyńska
1   Department of Gastroenterology, Pomeranian Medical University, Szczecin, Poland
› Author Affiliations
Further Information

Publication History

Publication Date:
18 March 2019 (online)

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Aims:

Our aim was to analyse the clinical, endoscopic and pathological characteristics of rectal neuroendocrine tumors and check whether the neuroendocrine origin of lesions was suspected during endoscopy and subsequently were these lesions removed with appropriate method.

Methods:

Retrospective analysis of patients hospitalized in our department (2006 – 2018) was done to look for rectal NENs. Clinical data were analysed. Further patients fate was checked by analysing their follow-up imaging results and by an information obtained from patient in a phone call.

Results:

27 patients (equal sexual distribution) with rectal NENs were diagnosed (3 patients who underwent surgery were excluded). The patients mean age was 51 (range 33 – 64). Most of the patients were asymptomatic (67%). Endoscopically there were three main lesion appearances; “typical” (15 patients) smooth seating polyps with yellowish reflexion, atypical seating small flat polyps (6 patients) or lesions with central depression (3 patients). Only 9 out of 24 of the lesions were suspected of neuroendocrine origin and removed with ESD/EMR (R0 resection in all), the rest 15/24 were removed with biopsy forceps or snare polypectomy (R0 not obtained). Mean size of lesions was 6,5 mm (range 3 – 10 mm) and majority of lesions were G1 lesions (21 patients), with only three G2 lesions. The follow-up (median 68 months) was longer in the group treated with polypectomy than ESD/EMR (75 months vs. 51,5 months). Most of the patients are disease free apart from one patient who after seven years after snare polypectomy of G1 tumor, developed local recurrence and distal metastases (the patient was referred to our department for follow-up rectal EUS).

Conclusions:

Rectal neuroendocrine tumors, mostly, are small lesions with low potential of malignancy, however, with the risk of metastatic spread. In majority of cases the origin of the lesions is not suspected during colonoscopy and subsequently these lesions are removed with not appropriate method. More impact must be put on education of endoscopists in this field.