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  • The Internet Journal of Surgery
  • Volume 10
  • Number 1

Original Article

Diffuse Adenomyomatosis Of The Gallbladder: An Infrequent Disease Wth Difficult Preoperative Diagnosis

J Carvajal Balaguera, M Martín García-Almenta, S Oliart Delgado de Tórres, M Saiz Pardo-Sanz, J Camuñas Segovia, L Peña Gamarra, K Llanos, P Gómez Maestro, P Fernández Isabel, A Prieto Sánchez, S Viso Ciudad, C Cerquella Hernández

Keywords

clinical findings, diagnosis, gallbladder adenomyoma, gallbladder adenomyomatosis, treatment

Citation

J Carvajal Balaguera, M Martín García-Almenta, S Oliart Delgado de Tórres, M Saiz Pardo-Sanz, J Camuñas Segovia, L Peña Gamarra, K Llanos, P Gómez Maestro, P Fernández Isabel, A Prieto Sánchez, S Viso Ciudad, C Cerquella Hernández. Diffuse Adenomyomatosis Of The Gallbladder: An Infrequent Disease Wth Difficult Preoperative Diagnosis. The Internet Journal of Surgery. 2006 Volume 10 Number 1.

Abstract

Adenomyomatosis is a rare disease of the gallbladder characterized by epithelial proliferation and formation of mucosal pouches through the thickened muscular layer of the gallbladder wall: the so-called Rokitansky-Aschoff sinus. Most of the patients remain asymptomatic. Hence, adenomyomatosis is usually an incidental finding on ultrasonography performed for other reasons. We present a patient treated during the last year, a 35-year-old woman. She had dull pain in the right subcostal region, approximately 6 months before the diagnosis was established. Diagnosis of acute cholecystitis was made preoperatively on ultrasonography. Laparoscopic cholecystectomy was carried out. Diagnosis of diffuse adenomyomatosis was confirmed after histopathological study. Clinical findings, diagnosis and treatment are discussed.

 

Introduction

Gallbladder adenomyomatosis (GBA) is an infrequent disease of unknown origin and of slow growth. It may be located in any place of the gallbladder, but fundamentally in the bottom. Occasionally, it can be located in the biliar conduits. Diagnosis is usually difficult because generally it is asymptomatic and not suspected. Patients developing symptoms present a clinical picture similar to that of the cholelithiasis. Abdominal ultrasonography and computed tomography (CT) are the most useful tests to guide the diagnosis; however, it is the histopathological study that confirms it1.

On the occasion of a case in our service, we have carried out this work with the objective to review clinical aspects, diagnostic tests and therapeutic options of this disease.

Case Report

A 35-year-old woman with antecedent of tobacco addiction and metoclopramide allergy came to the consultation with dyspepsia, inappetence, weight loss of 8 kg in 6 months and progressive deterioration of her general state. At physical exploration, she presented with extreme thinness and paleness. The abdomen was soft without masses but painful in the right hypochondrium. Laboratory data showed the following: hemoglobin 12.2g/dl, hematocrit 35.3%, red blood count 3,700.000/µL, platelets 175.000/µL, white blood count 7.300/µL, partial thromboplastin time 32 seconds, prothrombin time 13.9 seconds, blood urea nitrogen 13mg/dl, creatinine 9.4mg/dl, aspartate amninotransferase 34 IU/l, alanine aminotransferase 45 IU/l, totol bilirubin 0.8mg/dl, sodium 140 mEq/l and potassium 4.5 mEq/L. Serum carbohydrate antigen 19-9, carcinoembryonic antigen and alpha-fetoprotein antigen were normal. Breathe test for Helicobacter pylori was normal. Abdominal ultrasonography (Fig. 1) revealed a gallbladder with very thick wall due to acute cholecystitis containing multiple stones.

Figure 1
Figure 1: Abdominal ultrasonography showing reduction of the gallbladder lumen with irregular enlargement of the wall containing multiple stones.

The patient underwent programmed laparoscopic cholecystectomy. Histopathological examination showed diffuse adenomyomatosis of the gallbladder, chronic cholecystitis and multiple cholelithiasis. (Fig. 2, 3).

Figure 2
Figure 2: Longitudinally opened gallbladder with stones and diverticular enlargement of the wall.

Figure 3
Figure 3: Microscopical aspect of gallbladder adenomyomatosis (HE x 4 y x 20) showing cystic glandular formations in the thickened gallbladder wall surrounded by muscle fibres and lined with glandular epithelium.

The postoperative course was uneventful. There is no evidence of recurrence and the patient is asymptomatic after a follow-up of 1 year.

Discussion

GBA belongs to a heterogeneous group of alterations included in polypoid lesions of the gallbladder. Sánchez et al. 2 found 216 (6.5%) polypoid lesions in a total of 3.316 extirpated gallbladders: 125 (3.8%) with adenomyomatosis, 29 (0.87%) heterotopic lesions, 28 (0.84%) cholesterol polyps, 11 (0.33%) adenomas, 8 (0.24%) dysplasia lesions, 6 (0.18%) inflammatory polyps, 4 (0.12%) in situ carcinomas, 3 (0.09%) hyperplasia lesions and 2 (0.06%) hamartomas.

In the study by Cruz et al. 3, nine of the eleven cases of biliary adenomyomatosis were located in the bottom of the gallbladder (82%), one in the cystic conduit and one in the distal common bile duct. In some occasions, it can be located in the right and left hepatic conduits, in the common hepatic duct and in the ampulla of Vater. Outside of the biliary conduits, adenomyomatosis has been described in stomach, duodenum, jejunum, ileum, Meckel's diverticulum, sigmoid colon, rectus muscles, navel, uterus, broad ligament, uterosacral ligament, round ligament, uterine tubes, ovary, recto-vaginal wall, abdominal cavity and also associated to Gardener syndrome.

Adenomyomatosis is an uncommon disease, characterized by slow growth, benign hyperplasia of the gallbladder mucosa forming invaginations through the muscular layer, well-known under the name of Rokitansky-Aschoff sinus and by a very enlarged gallbladder wall, generally more than 5mm in thickness (Fig. 2). It is considered an acquired disease with a physiopathology similar to colon diverticular disease4. Microscopically, it is constituted by a proliferation of flat muscular fibres and epithelial adenomatous cells (Fig. 3). According to the distribution of this disease in the gallbladder, three forms are described: Focal (48%5-89%6), diffuse (26%) and segmental form (26%)5. There can also be mixed forms7.

Frequently (in 81%), GBA is associated to another biliary or pancreatic diseases: cholelithiasis and chronic cholecystitis in 89% of the cases, choledocholithiasis in 22% and antecedents of pancreatitis of biliary origin in 22%. Therefore, it is believed that chronic inflammation of the biliary mucosa is implied in the origin of this disease3. In some occasions, this pathology is also associated to gallbladder adenocarcinoma or leiomyosarcoma8,9,10, to anomalies of the biliary tree or to duodenal diverticula11. Nabatame et al. 12 found a stronger association between segmental adenomyomatosis and carcinoma (6.6%), especially in elderly patients (15.6%), with a statistically significant difference (p<0.001), which suggests that segmental adenomyomatosis could be a factor of high risk for carcinoma of gallbladder in elderly patients.

These tumours have been described with other names such as adenomyosis, hamartomas or hyperplastic adenomyomatosis13.

GBA affects men and women between 40 and 70 years in similar proportion. The age of maximum frequency is located around 50 years3. However, it has also been described in children as casual finding14,15.

Preoperative diagnosis is difficult as one does not suspect this disease because it can clinically show several forms in function of the localization. Qiao et al. 16 reported that only in 7 out of 42 cases the diagnosis was made correctly before the surgical intervention. The clinical picture can vary from asymptomatic (60%)6 to symptomatic patients. These symptoms can be: dyspepsia, pain in the right hypochondrium, fever of unknown origin, acute or chronic cholecystitis17. When it affects the biliary tree, it can cause symptoms of extrahepatic cholestasis, hemobilia, cholangitis or pancreatitis. In the particular case of an adenomyoma of the cystic conduit, it is manifested with pain of colic type and gallbladder hydrops18.

Generally, there are no alterations in the laboratory analyses. However, when adenomyomatosis accompanies acute cholecystitis, it can show high leukocytes counts with deviation to the left. When adenomyomatosis affects the biliary tree, there can be alterations in hepatic and pancreatic function: Hepatic enzymes are high, alkaline phosphatase and serum amylase are altered3.

Imaging techniques constitute the tests of choice in the diagnosis of this pathology, mainly the abdominal ultrasonography (USG). Computerized tomography (CT), magnetic resonance cholagiopancreatography (MRCP) and endoscopic retrograde cholangiopancreatography (ERCP) are of utility in the case of more complexity and in the cases of diagnostic doubt. However, in most of the cases, definitive diagnosis is made after surgical resection and histopathological study.

In the cases of diffuse adenomyomatosis of the gallbladder, ultrasonography shows an enlargement of the wall with small cystic areas representing the Rokitansky-Aschoff sinus. The segmental form has an inflammatory appearance similar to cholecystitis. Conventional ultrasound has a sensitivity oscillating between 45% and 90%. This sensitivity depends on the experience of the radiologist19. In small and flat lesions, conventional ultrasonography cannot differentiate between benign and malignant lesions20. In these cases, endoscopic ultrasonography is the method of choice21. In the opinion of Azuma et al. 22, endoscopic ultrasonography has a sensitivity of 91% and a specificity of 87% in these cases.

In the conventional scanner, gallbladder adenonomyomatosis appears as diverticular lesion containing gallstones23.

In MRC, gallbladder adenomyomatosis is perceived as an enlargement of the gallbladder wall with intramural diverticula indicating the presence of Rokitansky-Aschoff sinus, the specific image of this disease. This test is of great utility to differentiate gallbladder carcinoma from adenomyomatosis24,25. In the study of Haradome et al. 26 on 29 patients, MRC demonstrated a sensitivity of 62%, specificity of 92% and an accuracy of 74% in GBA diagnosis.

The treatment of choice of these tumours is surgical resection, both in symptomatic and asymptomatic cases, accompanied or not by cholelithiasis, due to the uncertain evolution of this disease and to the difficulty of differential diagnosis with carcinoma, in spite of all the diagnostic tests available at present5,27. Cholecystectomy is suitable when the process is located in the gallbladder. When the tree biliary is affected surgical resection with free margins and entero-biliary derivation is indicated28,29 .

Conclusion

Gallbladder adenomyomatosis is an uncommon and generally asymptomatic entity and when this disease is symptomatic, it is manifested fundamentally like a cholecystopathy. Preoperative diagnosis is difficult as one does not suspect it and in most of the cases it constitutes an ultrasonography finding. The treatment of choice is cholecystectomy due to the uncertain evolution of this disease.

Correspondence to

Josué Carvajal Balaguera Calle Téllez 30, Escalera 12, 2ª planta, puerta 3 28007 Madrid, Spain Tel.: +34915520026; Fax: +34915345330; E-mail: josuecarvajal@yahoo.es

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Author Information

J. Carvajal Balaguera
Surgeon Assistant, Service of General and Digestive Surgery, Hospital Central de la Cruz Roja San José y Santa Adela

M. Martín García-Almenta
Surgeon Assistant, Service of General and Digestive Surgery, Hospital Central de la Cruz Roja San José y Santa Adela

S. Oliart Delgado de Tórres
Surgeon Assistant, Service of General and Digestive Surgery, Hospital Central de la Cruz Roja San José y Santa Adela

M. Saiz Pardo-Sanz
Physician Assistant, Service of Pathological Anatomy, Hospital Central de la Cruz Roja San José y Santa Adela

J. Camuñas Segovia
Surgeon Assistant, Service of General and Digestive Surgery, Hospital Central de la Cruz Roja San José y Santa Adela

L. Peña Gamarra
Surgeon Assistant, Service of General and Digestive Surgery, Hospital Central de la Cruz Roja San José y Santa Adela

K. Llanos
Surgeon Assistant, Service of General and Digestive Surgery, Hospital Central de la Cruz Roja San José y Santa Adela

P. Gómez Maestro
Surgeon Assistant, Service of General and Digestive Surgery, Hospital Central de la Cruz Roja San José y Santa Adela

P. Fernández Isabel
Surgeon Assistant, Service of General and Digestive Surgery, Hospital Central de la Cruz Roja San José y Santa Adela

A. Prieto Sánchez
Surgeon Assistant, Service of General and Digestive Surgery, Hospital Central de la Cruz Roja San José y Santa Adela

S. Viso Ciudad
Surgeon Assistant, Service of General and Digestive Surgery, Hospital Central de la Cruz Roja San José y Santa Adela

C. Ma. Cerquella Hernández
Chief, General and Digestive Surgery Service, Hospital Central de la Cruz Roja San José y Santa Adela

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