A 39-year-old woman was admitted on an emergency basis with severe upper gastrointestinal
bleeding. On examination, she was shocked and had a haemoglobin of 37 g/l. Following
resuscitation, she underwent an emergency upper gastrointestinal endoscopy, which
showed a polypoid lesion in the antrum of the stomach (Figure [1]). As she remained unstable, a laparotomy was undertaken, at which the palpable lesion
was identified (Figure [2]) and excised using an elliptical incision, with clear macroscopic margins. Pathological
examination of the gastric tissue revealed a gastric carcinoid tumour (Figure [3]). The patient subsequently underwent a radical subtotal gastrectomy with Roux-en-Y
gastrojejunal anastomosis. Histology showed that the resection margins were free from
any tumour.
Figure 1 Endoscopic view of the polypoid lesion in the antrum of the stomach, with a prominent
nonbleeding visible vessel at the tip.
Figure 2 The posterior wall of stomach at laparotomy, showing a multilobed, irregular lesion
(3.6 cm in diameter), with large feeding vessels.
Figure 3 The lobulated tumour within the submucosa, consisting of bland cells with abundant
cytoplasm (haematoxylin-eosin stain; original magnification × 20). There was marked
intravascular invasion, with the tumour extending to the resection margin.
Four previous cases of severe bleeding from a gastric carcinoid, requiring surgical
treatment, have been reported [1]
[2]
[3]
[4]. In all cases, a single gastric carcinoid of the sporadic type was found. In two
of these cases, abnormal submucosal vasculature eventually opening up onto the mucosal
surface was thought to explain the severity of the bleeding [1]
[2]. This also appears to have been the situation in the present case, with large feeding
blood vessels to the tumour and an apparent nonbleeding visible vessel at endoscopy.
Three types of tumour have been classified. Type I and II tumours are characteristically
multiple and small, with low malignant potential. Type III tumours are usually single
and associated with a high malignant potential. More radical surgery, such as complete
or partial gastrectomy, is required in such cases [5]. As this patient had a type III tumour, it was considered that an aggressive surgical
approach was indicated, and she therefore subsequently underwent a radical subtotal
gastrectomy.
We would suggest that if a lobulated tumour is found at endoscopy, gastric carcinoid
tumour should be considered in the differential diagnosis. Although these tumours
are rare, recognition is important, as certain types are associated with a high malignant
potential.
