| Literature DB >> 33682302 |
Janice Miller1,2, Yasuko Maeda1,2, Stephanie Au1, Frances Gunn1, Lorna Porteous3, Rebecca Pattenden4, Peter MacLean5, Colin L Noble6, Stephen Glancy5, Malcolm G Dunlop1,2,7,8, Farhat V N Din1,2,7,8.
Abstract
AIM: The dramatic curtailment of endoscopy and CT colonography capacity during the coronavirus pandemic has adversely impacted timely diagnosis of colorectal cancer (CRC). We describe a rapidly implemented COVID-adapted diagnostic pathway to mitigate risk and maximize cancer diagnosis in patients referred with symptoms of suspected CRC.Entities:
Keywords: COVID-19; colorectal cancer; faecal immunochemical tests; qFIT; triage
Mesh:
Year: 2021 PMID: 33682302 PMCID: PMC8250907 DOI: 10.1111/codi.15618
Source DB: PubMed Journal: Colorectal Dis ISSN: 1462-8910 Impact factor: 3.917
FIGURE 1NHS Lothian COVID‐adapted colorectal cancer pathway. Patients were triaged by colorectal consultants with information provided from general practice (GP). They proceeded through the pathway in a step‐wise fashion being stratified by quantitative faecal immunochemical test (qFIT) results (CRC, colorectal cancer; CT, computed tomography scan; IDA, iron deficiency anaemia; OPD, outpatient department; USOC, urgent suspected of cancer)
FIGURE 2Flow of patients through the pathway leading to cancer diagnosis. Patients were diagnosed through a variety of routes, the maximal yield coming from those who had both initial CT and quantitative faecal immunochemical test (qFIT) testing. With 50% being diagnosed from the outpatient clinic, the initial referral examination was deemed to be of great importance
FIGURE 3Distribution of double quantitative faecal immunochemical test (qFIT) results. Double qFIT testing showed variability of results. Eighty‐four per cent of patients had both results <80 μg/g, 8% had one result <80 μg/g and one >80 μg/g and a further 8% had two results >80 μg/g. There were two cancers diagnosed in those with two qFITs <10 μg/g and one in a patient with two qFITs >400 μg/g (USOC, urgent suspected of cancer)
Pathological diagnoses in cancer patients
|
| ||
|---|---|---|
| Disease site | Anal canal | 2 |
| Rectum | 5 | |
| Rectosigmoid junction | 1 | |
| Sigmoid | 5 | |
| Caecum | 1 | |
| Initial treatment | Radiotherapy | 5 |
| Surgery | 4 | |
| Chemoradiotherapy | 1 | |
| Polypectomy | 1 | |
| Palliative stent | 1 | |
| Awaiting decision | 1 | |
| Final pTNM stage | T2N0 M0 | 1 |
| T2N1bM0 | 1 | |
| T3N1aM0 | 1 | |
| T3N0 M0 | 1 | |
| T4aN1 M0 | 1 |
The majority of patients were diagnosed with cancers of the rectum and sigmoid. Five patients have so far proceeded to definitive surgery.
FIGURE 4Distribution of quantitative faecal immunochemical test (qFIT) results and overall outcome. The majority of patients had an undetected qFIT result. Despite this three cancers were diagnosed within this group
Alternative diagnoses from CT minimal preparation scans
| Pathology |
|
|---|---|
| Ischaemic colitis | 1 |
| Diverticulitis | 2 |
| Sigmoid polyps | 1 |
| Ulcerative colitis | 1 |
| Recurrent breast cancer | 1 |
| Metastatic pancreatic cancer | 1 |
| Indeterminate lung lesion | 1 |
| Renal cyst | 1 |
FIGURE 5Number of referrals by priority 2017–2019. There was a marked decrease in the total number of referrals during the pandemic, with an increase in the number of ‘urgent suspected of cancer’ referrals (qFIT, quantitative faecal immunochemical test)