Solid pseudopapillary neoplasm of the pancreas.
ABSTRACT Solid pseudopapillary neoplasms (SPNs) are rare entities accounting for between 0.13 and 2.7 per cent of pancreatic tumours. This neoplasm has a predilection for females under the age of 35. The authors report this case of a SPN incidentally discovered when a 59-year-old female underwent a chest x-ray to investigate a wheeze. A subsequent CT abdomen revealed a 10 cm well-circumscribed mass adjacent to the tail of the pancreas. This mass was successfully resected. Immunohistochemical markers established the diagnosis of a SPN. The wheeze associated with the presentation of this case was unrelated to the tumour which was an incidental finding. These neoplasms are largely asymptomatic and indolent reaching a large size before detection. Diagnosis is confirmed on histology and in this case surgical resection was curative and there was no metastasis at presentation.
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ABSTRACT: Background and Aim: Clinicopathological data regarding pancreatic solid pseudopapillary tumors (SPT) in a multiethnic country are limited. The aim of the present study was to characterize pancreatic SPT in Australia.Methods: Clinicopathological features, treatment, immunohistochemical findings and outcome data of 34 patients (79% Caucasian, 12% Asian, 6% South Pacific Islander and 3% African) with pancreatic SPT were reviewed.Results: The most presenting complaint was abdominal pain. Median diameter of tumors was 60 mm (range: 20–220); predominantly located in the pancreatic tail (tail : body : head = 23:3:8). All tumors were resected and patients underwent surgery, including a liver resection for metastasis, all patients were alive after a median follow up of 70 months (IQR: 48–178). Two patients underwent repeated surgery for local recurrences with liver metastases after 8 and 18 months, which were successfully managed by surgical resection. Completeness of excision, perineural spread, vascular space invasion, mitotic rate and cellular atypia did not predict recurrence. In all cases, there was aberrant nuclear staining of beta-catenin and a loss of membranous expression of E-cadherin with aberrant nuclear localization of the cytoplasmic domain. Most pancreatic SPT were also strongly positive for CD10 (96%), progesterone receptor (79%), cytokeratin (28%), synapthophysin (26%) and chromogranin (15%).Conclusions: Pancreatic SPT occur in all races and are uniformly indolent. Given complete resection of a pancreatic SPT is usually curative and recurrences can be treated with re-operation, correct diagnosis is important.Journal of Gastroenterology and Hepatology 01/2011; 26(2):267 - 274. DOI:10.1111/j.1440-1746.2010.06466.x · 3.63 Impact Factor