Papillary cystic carcinoma of the pancreas and present status of pancreatic malignancies in Brunei

During the 10-year period from January 1986 to December 1995, a total of six cases of pancreatic carcinoma were documented in Brunei. Among them was a case of papillary cystic carcinoma of the pancreas, in which the patient, a 22-year-old woman, presented with a painless upper abdominal mass that had been increasing in size over a 6-year period. Ultrasonography showed a well circumscribed solid and cystic pancreatic mass. The tumor was excised locally and the patient remained disease-free at 8 months' follow-up. This papillary cystic carcinoma of the pancreas deserves special mention as it has a low-grade malignant potential, is amenable to local resection, and has a good long-term survival rate after excision.     

Melanotic Schwannoma of the Pancreas: Report of a Case

We report a case of pancreatic melanotic schwannoma mimicking an epithelial cystic neoplasm of the pancreas. A 67-year-old Japanese woman underwent routine ultrasonography, which showed a large cystic mass in the head of the pancreas. Contrast-enhanced computed tomography (CT) and magnetic resonance imaging (MRI) showed an inhomogeneous, round cystic mass, which was encapsulated, in the head of the pancreas. We performed pyrolus-preserving pancreatoduodenectomy under the tentative diagnosis of a cystic neoplasm of the pancreas. The histopathologic diagnosis was benign melanotic schwannoma. The patient is now well after 43 months of follow-up. We describe the CT and MRI findings in detail, and review the literature on previously reported cases of pancreatic schwannoma.     

Coexistence of mucinous cystic neoplasm occurring in the head of the pancreas with annular pancreas: Report of a case

Mucinous cystic neoplasms (MCN) of the pancreas are rare tumors that are almost exclusively located in the body or the tail of the pancreas. A 60-year-old woman with no history of pancreatic disease was referred to our hospital with a chief complaint of dull pain in the upper abdomen. Abdominal computed tomography showed a multilocular cystic mass of 7.0 cm in the head of the pancreas, and endoscopic retrograde cholangiopancreatography showed no communication between the cystic mass and the main pancreatic duct. A pancreatoduodenectomy was performed for the complete resection of the tumor, and an annular pancreas was discovered by accident. The pathological examination of the tumor led to a definitive diagnosis of MCN with ovarian-type stroma. To our knowledge this is the first documented case of MCN occurring in the head of the pancreas and associated with annular pancreas.     

Mucinous pancreatic ductal ectasia of latent malignancy: an emerging clinicopathologic entity.

The natural history of classic mucinous cystic neoplasms of the pancreas has been previously defined. In this report, an unusual variant of a pancreatic mucinous cystic neoplasm, termed "mucinous pancreatic duct ectasia of latent malignancy," is described. The lesion is characterized by massive dilatation of the main pancreatic duct and its tributaries. Histologically, the ducts are lined by epithelium, which is indistinguishable from the classic mucinous cystic neoplasms. Until the natural history of classic mucinous cystic neoplasm is better documented, resection appears to be the treatment of choice.     

Mucinous cystic neoplasm of the pancreas during pregnancy: the importance of proper management

We describe a case of huge mucinous cystic tumor of the pancreas in a 26-year-old woman during pregnancy. Ultrasonography demonstrated a well-delimited cystic mass in the left upper abdominal quadrant, suggestive of benignity. Magnetic resonance imaging showed a large cystic mass resembling a mucinous cystic tumor of the pancreas. After this assessment the patient underwent surgical exploration and a huge cystic tumor of the pancreas was discovered. The tumor was enucleated and distal pancreatectomy was performed. The resected margin of the specimen was free of tumor. In this case report we discuss the management of mucinous pancreatic tumors during pregnancy and we briefly review the previously reported cases of mucinous pancreatic tumors in pregnant patients. We conclude that surgical resection of these tumors should be strongly considered in pregnancy. Removal of the tumor appears to be a safe procedure without harmful effects to the fetus.     

Laparoscopic distal pancreatectomy for a large pancreatic lymphoepithelial cyst: a rare entity

Lymphoepithelial cysts (LECs) of the pancreas are rare true pancreatic cysts. Their cause is not known. The differential diagnosis is broad and includes many benign and malignant cystic lesions of the pancreas and surrounding organs. A combination of imaging modalities and fine needle aspiration might narrow the differential diagnosis. However, the final diagnosis can only be achieved with certainty after resection of the cyst. In this study, we report the largest LEC of the pancreas to have been resected laparoscopically. A 43-year-old man presented with upper abdominal pain, a 7.5 cm mutlioculated cystic mass in the pancreatic body and tail on imaging, and a raised serum cancer antigen-19-9. Laparoscopic distal pancreatectomy and splenectomy was performed. Histologic examination revealed a LEC. This study discusses the diagnostic difficulties and management decisions which face surgeons treating pancreatic cysts.     

Lymphoepithelial cysts of the pancreas: Case report and review of the literature

The aim of this report was to describe the clinical and pathologic features of lymphoepithelial cysts of the pancreas, establish the differential diagnosis of other pancreatic cysts, and review the literature.A 53-year-old man was incidentally diagnosed with a pancreatic lesion after an abdominal CT scan. This study showed a solid mass in the tail of the pancreas not enhanced by helical CT. Endoscopic ultrasound examination revealed a low-density tissue mass on the surface of the pancreas, less echogenic than the surrounding parenchyma. Distal pancreatectomy and splenectomy were performed with a suspected diagnosis of mucinous cystic tumor. The patient has had an uneventful postoperative period, and the pathologic finding was a lymphoepithelial cyst of the pancreas. Lymphoepithelial cyst of the pancreas is an unusual and benign entity that must be taken into consideration when evaluating a cystic lesion of the pancreas because a different therapeutic approach may be required.     

胰头部肿块手术方式选择及评价

胰头部肿块解剖位置特殊,病理类型多样,治疗应采取个体化原则,对于胰头部实性包块,术前应重视肿块型胰腺炎和胰腺癌的鉴别,胰十二指肠切除术是胰头癌的经典术式,关于保留幽门的胰十二指肠切除,扩大淋巴结清扫范围及联合血管切除目前仍无共识,可酌情选用。近年来保留十二指肠的胰头切除术在治疗胰头肿块型胰腺炎中体现出一定优越性。对于术中仍无法区别良恶性者,不必过分强调病理结果,选择胰十二指肠切除术是可以接受,也是值得的。对于胰头部囊性及囊实性肿块,应根据肿瘤大小、位置、病理类型选用假性囊肿内、外引流、单纯摘除、保留十二指肠的胰头切除、胰腺节段切除及胰十二指肠切除术等,注意囊性肿块鉴别诊断,避免误将囊性肿瘤按假性囊肿行内引流术。     

Papillary cystic epithelial neoplasms of the pancreas. A clinical study of four cases

We treated four cases of papillary cystic epithelial neoplasm of the pancreas. This neoplasm typically presents in young female patients as a slowly growing mass that may attain large size. It is of low malignant potential, and surgical resection will be curative in almost all cases. One patient presented with a liver metastasis from the pancreatic tumor; both lesions were successfully resected. Papillary cystic epithelial neoplasm should be considered in the differential diagnosis of any cystic pancreatic neoplasm.     

胰腺囊性病变的诊断与治疗(附40例报告)

目的探讨胰腺囊性病变诊断与治疗的有效方法。方法总结我科１９９２～１９９７年收治的经手术和病理证实的４０例胰腺囊性病变的诊治经验。结果患者主要临床表现为上腹部胀痛、腹部包块,Ｂ超、ＣＴ扫描见胰腺囊性肿块。但定性诊断仅靠临床表现、影像学检查较困难,特别难以鉴别假性囊肿与囊性肿瘤。结论胰腺囊性病变的确诊需病理诊断,正确的诊断决定治疗方式的选择。     

Intraductal papillary mucinous tumor of the pancreas associated with autosomal dominant polycystic kidney disease

A 43-year-old male with a history of autosomal dominant polycystic kidney disease (ADPKD) was admitted to our center with severe abdominal pain and was diagnosed with acute pancreatitis. CT showed multiple cysts in the liver and both kidneys along with ADPKD and a cystic mass, 4 cm in diameter, in the pancreatic head. The main pancreatic duct was dilated to 1 cm in diameter. The patient was diagnosed with acute pancreatitis due to intraductal papillary mucinous tumor (IPMT), and pancreatoduodenectomy was performed. Histologic examination revealed a multiloculated cystic tumor filled with mucin in the head of the pancreas. Microscopically, the tumor was diagnosed as adenocarcinoma and was found to have invaded the main pancreatic duct. Although, in addition to our case, only seven cases with association between ADPKD and malignant neoplasms have been reported, five of these cases had neoplasms arising from the pancreas. Therefore, we suggest that some genetic interactions may exist between ADPKD and pancreatic carcinogenesis.     

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??Surgical treatment of pancreas head mass lesions:strategy and evaluation ZHANG Tai-ping, ZHAN Han-xiang, XIE Yong,et al. Department of Surgery,Peking Union Medical College Hospital,Chinese Academy of Medical Sciences,Beijing 100730, China Corresponding euthor:ZHAO Yu-pei, E-mail:zhao 8028@263.net Abstract Because of the special Anatomical location and diversity of pathology, surgical treatment of pancreas head mass lesions should be individual. For the solid mass,it is important to distinguish chronic pancreatitis with mass in the head of the pancreas with pancreatic carcinoma before operation process. Pancreaticoduodenectomy is the classical operation for pancreatic head carcinoma. There is still no consensus for the widely application of PPPD,ELND and VR, so they can be Selected conditionally. Duodenum-preserving pancreatic head resection has certain superiority in the treatment of pancreatic head mass lesions. Do not have too much emphasis on the pathological results of the atypical cases. Pancreaticoduodenectomy is acceptable and worthwhile for these patients.For the cystic and cystic-solid mass in the pancreas head, the operation process should be based on tumor size, location, pathological type and so on.External and internal drainage,tumor enucleation, duodenum-preserving pancreatic head resection,segmental resection,Whipple procedure are the usual applied operation process.Inside drainage should be avoided for the pancreas cystic tumors.     

Lymphoplasmacytic sclerosing pancreatitis: a case report

The Authors report a case of a 57 years old woman with a pancreatic cystic mass detected by abdominal ultrasonography performed for abdominal pain. Abdominal computed tomography revealed a cystic mass in the pancreatic head. Left segmental intrahepatic biliary tract dilatation without dilatation of the common bile duct and dilatation of the main pancreatic duct distal to the pancreatic mass were also present at cholangio-pancreatography. The patient underwent pancreaticoduodenectomy (Whipple procedure). The histological diagnosis was lymphoplasmacytic pancreatitis. The diagnosis of this disease is challenging. It should be suspected in patients with known autoimmune diseases. Accepted diagnostic criteria are diffuse swelling of the pancreas and diffuse or focal narrowing of the main pancreatic duct, but they are not always present. In the absence of the above-mentioned characteristics, when the disease presents as a solid or, less frequently, cystic mass it is almost impossible to distinguish it from pancreatic neoplasms. Awareness of this pathological condition in the differential diagnosis of pancreatic masses is necessary, especially in view of reports of complete recovery after medical therapy in the literature.     

Hydatid cyst of the pancreas

A rare case of hydatid cyst of the pancreas is reported. Although ultrasonography and computerised tomography scan confirmed the presence of a cystic mass in the body and tail of the pancreas, diagnosis was made only on laparotomy. A distal pancreatectomy was done and the diagnosis of hydatid cyst of the pancreas was confirmed by histopathology. Though very rare, pancreatic hydatidosis should be considered in the differential diagnosis of cystic lesions of the pancreas in the appropriate epidemiological setting.     

Congenital true pancreatic cyst detected prenatally in neonate: a case report

True congenital epithelium-lined cysts of the pancreas are rare, and the prenatal diagnosis of a true pancreatic cyst has been reported only rarely. In this article, the authors report a 3-day-old girl with histologically proven true pancreatic cyst that was detected by prenatal ultrasonography. The cystic mass was located in the left upper side of the abdomen, and total cystectomy was performed without complication.     

Mucinous cystadenocarcinoma of the pancreas diagnosed in postpartum

Background Cystic tumors of the pancreas are uncommon. They account for 10–15% of all pancreatic cystic masses and only 1% of pancreatic malignancies. Mucinous cystadenocarcinoma is the most frequent pancreatic cystadenocarcinoma and it is mainly seen in women, suggesting a sex hormone influence. Its presentation during pregnancy is infrequent and entails difficult diagnostic and therapeutic decisions. We report the case of a 31-year-old woman who presented a pancreatic cystadenocarcinoma 2 months after delivery. Materials and methods A 31-year-old woman was referred to our service because of abdominal pain and mass. She had given birth to her first child 2 months previous. Abdominal ultrasound demonstrated a poorly circumscribed cystic mass in the left upper abdominal quadrant, and the computed tomography scan showed a multilocular cystic lesion located in the body of pancreas. There was no seric alteration of specific pancreatic enzymes or tumor markers. Results Laparoscopic examination showed a large cystic tumor (12 × 11 × 5.5 cm) in the pancreas involving the body and the tail. It extended to the spleen and was highly vascularized, precluding a minimal invasive resection. An open body–tail pancreatectomy and splenectomy was performed. The resection margins were free of tumor, and the histological study showed a mucinous pancreatic cystadenocarcinoma with mucin-producing columnar epithelium and associated papillae patterns, reminiscent of ovarian stroma. Immunohistochemical studies were negative for hormonal receptors. The patient had no post-surgical complications and was discharged home in 4 days. Conclusions Cystic tumors of the pancreas are infrequent, and cancer of the pancreas during pregnancy is extremely rare. Insidious symptoms and bodily changes due to pregnancy may mask diagnosis. Aggressive surgery is currently the only chance of cure.     

Primary Hydatid Cyst of the Pancreas

Background: Hydatid cyst of the pancreas is rare, accounting for less than 1% of the various sites of hydatid disease, even in countries where echinococcosis is endemic. We report a case of pancreatic hydatid cyst to increase awareness for this important condition.

Case report: We describe a 33-year-old male with abdominal discomfort of one-year duration. On abdominal examination, there was mild tenderness with fullness in the right upper quadrant. Laboratory investigations revealed no abnormalities. Abdominal ultrasonography showed a cystic mass over the head of the pancreas. Abdominal CT scan confirmed the presence of a solitary cyst in the pancreatic head, with no enhancement on contrast CT. Indirect hemagglutination test for hydatid disease was negative. A pre-operative diagnosis of cystic neoplasm of the pancreas was made and laparo-tomy was done; on exploration there was a cystic mass arising from the head of the pancreas. A pericystectomy was carried out and the diagnosis of hydatid cyst of the pancreas was confirmed by histopathology. The postoperative period was uneventful and no recurrence was seen after 2 years of follow-up.

Conclusion: Pancreatic hydatidosis, though very rare, should be considered in the differential diagnosis of pancreatic cystic lesions in the appropriate epidaemiological setting.     

Lymphoepithelial Cyst of the Pancreas: Report of a Case

An extremely rare case of a lymphoepithelial cyst (LEC) of the pancreas is described herein. A pancreatic cystic tumor was initially detected in a 50-year-old man at a medical checkup. On admission, his serum carbohydrate antigen (CA) 19-9 level was 8 100 U/ml and a computed tomography scan revealed a well-circumscribed multilocular cystic tumor in the pancreatic head and body. Magnetic resonance cholangiopancreatography showed no communication between the pancreatic ducts and the tumor. A distal pancreatectomy with lymph node dissection was performed because the lesion was suspected to be a mucinous cystadenoma or cystadenocarcinoma of the pancreas. However, histological examination revealed that the cyst was lined by stratified squamous epithelium and surrounded by lymphoid tissue, thereby confirming the diagnosis of LEC of the pancreas. The superficial layer of squamous epithelium and the cystic contents were found to be immunohistologically positive for CA19-9. Establishing a preoperative diagnosis of LEC is quite difficult because it resembles other cystic neoplasms of the pancreas in radiographic features and is frequently associated with an elevation of serum tumor markers such as CA19-9. Received: June 21, 1999 / Accepted: March 24, 2000     

胰腺囊性肿瘤的临床诊治

提高对胰腺囊性肿瘤诊断和治疗的认识,减少这种少见肿瘤的误诊误治。方法:对1958年4月～1995年7月经病理证实的15例胰腺囊性肿瘤病人进行回顾性分析。结果:15例胰腺囊性肿瘤中,浆液性囊腺瘤6例,粘液性囊性肿瘤9例。肿瘤位于胰头部4例,体尾部10例,全胰1例。15例病人全部进行手术治疗,其中12例获手术切除,切除率为80％。术前明确诊断为胰腺囊性肿瘤者仅6例,其余9例术前被误诊为胰腺假性囊肿或中、上腹肿块而行手术,其中7例术中被诊为囊性肿瘤而获相应的根治性切除,另2例被错误地进行了内引流术。结论:胰腺囊性肿瘤临床上常被误诊,只要综合运用病史分析、影像学特点、囊液分析、术中活检等方法,就能提高诊断的准确率。胰腺囊性肿瘤手术切除率高,预后较好。     

Adult medullary cystic disease of the kidney and pancreatic cystic disease: a new association

A rare case of a woman with the adult form of medullary cystic disease associated with pancreatic cysts in pancreas divisum is described, which suggests that specific attention should be paid to computed tomography findings in the presence of pancreatic and renal cysts.