Colorectum
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Colonoscopy with one detected polyp in the transverse colon
The video shows 49 year old male with suspected food allergy. During colonoscopy, one polyp in the transverse colon was detected. The histology showed a lymphoid follicle and tubular adenoma with LGIEN.
Two aspects in the lesion, the central pit pattern is almost invisible under white light endoscopy and comes out much clearer under i-scan 1 (surface enhancement for detection) and i-scan 2 (tone enhancement for characterization).
Courtesy of Prof. Timo Rath from Erlangen University Hospital, Germany
Colonoscopy with two detected polyps
The video shows a colonoscopy of a 31 year old male with suspected food allergy. During the colonoscopy two polyps were found:
- one tubular adenoma with LGIEN in the descending colon
- one tubular adenoma with LGIEN in the sigmoid colon
The lesion can be easily missed with white light endoscopy (WLE), also in the setting of a very young patient.
By using i-scan 1, a better demarcation is possible. The vascular pattern are almost invisible unless i-scan OE is used.
Courtesy of Prof. Timo Rath from Erlangen University Hospital, Germany
Colonoscopy with detected Tubular Adenoma with LGIEN and SSA polyps
The video shows a screening colonoscopy of a 71 year old female. Two polyps were found during the screening:
- one tubular adenoma in the cecum
- one sessile serrated Adenoma (SSA) in the ascending colon. The pit pattern of polyp number two is almost not visible under white light endoscopy but comes out with i-scan (Type II open). Since SSA show accelerated progression towards CRC, i-scan really helps to differentiate them from hyperplastic lesions.
Courtesy of Prof. Timo Rath from Erlangen University Hospital, Germany
Radiation Proctopathy (RP)
RP is a chronic condition that has a significant burden on patients quality of life and healthcare. This clip shows how i-scan 2 helps to highlight the vascular lesions in detail in a patient with symptomatic bleeding and allows targeted YAG laser treatment to the lesions. The vascular areas are not prominent on HD WLE or even i-scan 1 but by switching to i-scan 2 thermal therapy can be directed to the abnormal areas.
Courtesy of Dr. Rehan Haidry, UCLH, UK
Ulcerative colitis
In ulcerative colitis i-scan clearly shows inflammatory changes of the mucosa. We also use it in conjunction with chromoendoscopy for the surveillance of patients with longstanding chronic inflammatory bowel disease to increase detection of flat lesions.
Courtesy of Michael Häfner, St. Elisabeth Krakenhaus, Austria
Serrated adenoma
Serrated adenoma are frequently missed as they are flat lesions with very subtle changes to the normal mucosa pattern. i-scan allows for enhanced vision of the vascular pattern and changes like the rim of debris and the mucus cap.
Courtesy of Dr. Michael Häfner, St. Elisabeth Krakenhaus, Austria
Laterally spreading tumour
In this patient with a laterally spreading tumour granular type i-scan was used to get a clear idea about the polyps pit pattern. As a pit pattern type IV was found, indicating a benign lesion, we proceeded to resect the lesion by means of endoscopic mucosal resection.
Courtesy of Dr. Michael Häfner, St. Elisabeth Krakenhaus, Austria
