Tuberculous biliary strictures: uncommon cause of obstructive jaundice

Primary Biliary Tuberculosis Masquerading Cholangiocarcinoma in 18F-Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography

Hepatobiliary involvement is a less common manifestation of abdominal tuberculosis. We present the case of a 42-year-old female who presented with fever, abdominal pain, and jaundice of 2 months duration. 18F-fluorodeoxyglucose positron emission tomography/computed tomography done for disease evaluation suggested the likely possibility of cholangiocarcinoma but excision biopsy from periportal lymph node later confirmed a granulomatous etiology and she was successfully treated with antitubercular therapy.

Imaging mimickers of cholangiocarcinoma: a pictorial review

Cholangiocarcinoma (CCA) is the second most common primary hepatobiliary malignancy and presents as three separate morphological subtypes; namely mass-forming, periductal-infiltrating, and intraductal-growing patterns. Each of these subtypes have distinct imaging characteristics, as well as a variety of benign and malignant mimics, making accurate diagnosis of CCA on imaging challenging. Whilst histopathological examination is required to arrive at a definitive diagnosis, it is still important for radiologists to be cognizant of these entities and provide reasonable differential diagnoses, as these potentially have a large impact on patient management. This pictorial essay illustrates the three morphological subtypes of CCA, as well as some important mimics for each subtype, that are encountered in clinical practice.

Tuberculous common bile duct stricture mimicking a cholangiocarcinoma: A case report

Biliary involvement during abdominal tuberculosis is extremely uncommon and represents a challenging diagnosis that can easily be mistaken for a malignant etiology. We report the case of a 40 years old male who presented with anorexia, chronic abdominal pain, and progressive obstructive jaundice. Abdominal computed tomography demonstrated distal narrowing with wall thickening of the main biliary duct, along with enlarged lymph nodes and signs of portal hypertension. Abdominal magnetic resonance imaging showed a long distal biliary stricture, suggestive of malignancy, with dilated intrahepatic radicles. The diagnosis of cholangiocarcinoma was initially suggested. However, given his young age and other imaging findings, the patient underwent laparoscopic biopsy which revealed epithelioid cell granuloma with caseating necrosis consistent with tuberculous origin.

Tuberculosis (TB) of the Porta Hepatis Presenting with Obstructive Jaundice Mimicking a Malignant Biliary Tumor: A Case Report and Review of the Literature

Localized hepatobiliary tuberculosis (TB) is a rare disorder which can present with an obstructive jaundice mimicking other noninfectious causes such as cholangiocarcinoma. Here, we report a case of porta hepatis tuberculosis in 19-year-old female who presented with an obstructive jaundice, and her computed tomography (CT) of the abdomen revealed a hepatic hilar mass with radiological features mimicking a malignant biliary tumor. We also review the literature related to this disorder.

CT appearances of abdominal tuberculosis

The purpose of this article is to review and illustrate the spectrum of computed tomography (CT) appearances of abdominal tuberculosis. Tuberculosis can affect any organ or tissue in the abdomen, and can be mistaken for other inflammatory or neoplastic conditions. The most common sites of tuberculosis in the abdomen include lymph nodes, genitourinary tract, peritoneal cavity and gastrointestinal tract. The liver, spleen, biliary tract, pancreas and adrenals are rarely affected, but are more likely in HIV-seropositive patients and in miliary tuberculosis. This article should alert the radiologist to consider abdominal tuberculosis in the correct clinical setting to ensure timely diagnosis and enable appropriate treatment.

Tuberculous biliary stricture

Tuberculosis (TB) of the hepatobiliary system is not uncommon, but as a cause of biliary strictures, it is very rare. It poses difficulty in diagnosis and often requires surgical intervention to exclude underlying malignancy. To our knowledge, there are fewer than 20 reported cases in the English literature. We report a 35-year-old Filipino woman who presented with a 3-day history of obstructive jaundice, associated with significant weight loss and anorexia. Computed tomography (CT) revealed dilated intrahepatic biliary system secondary to distal stricture at the confluence of the left and right bile ducts. Magnetic resonance cholangiopancreatography characterised the lesion as an irregular stricturing at several sites in the common bile duct. Incidentally, the scans also showed indeterminate pulmonary nodules in the right lower lobes. CT thorax confirmed bilateral involvement of the lungs. She required percutaneous transhepatic drainage for biliary decompression. Tests on tissue from the lung lesions, the blood, and the bile all confirmed the presence of TB. She was treated with anti-TB medication. This report emphasizes the importance of considering TB as a possibile cause of biliary stricture, especially in South-East Asia.

Hepatobiliary tuberculosis: a review of presentations and outcomes

Hepatobiliary tuberculosis (HTB) is uncommon and can be difficult to diagnose. We present our experience with HTB (over a 10-year period). Fourteen patients were identified from a total of 1888 cases of tuberculosis (TB) infection during this period. Five patients had isolated organ involvement [hepatic (n=3) and biliary (n=2)], and 9 had multiorgan involvement [2 organs (n=7) and 3 organs (n=2)]. The overall annual incidence ranged from 0.0% to 1.05% of all TB infections. Common clinical presentations were weight loss (64%), loss of appetite (64%), abdominal pain (57.1%), fever (50%), jaundice (42.3%), and abdominal distension (14.3%). The median delay from symptom onset to presentation was 40.5 days (range, 7-730 days), and from first presentation to diagnosis was 15 days (range, 1-420 days). Malignancy was initially suspected in 86%. Chest radiographic changes consistent with pulmonary TB were seen in 29% (n=4). Two had active pulmonary TB. Adverse effects of treatment occurred in 42.9%, mainly drug-induced hepatitis and nonspecific gastrointestinal symptoms. Three patients with biliary involvement required long-term biliary stenting. The overall mortality was 14%. In conclusion, HTB is uncommon and is often associated with other organ involvement. Presentation is often delayed, which may lead to significant morbidity and mortality.

Tuberculous lymphadenitis as a cause of obstructive jaundice: A case report and literature review

Obstructive jaundice secondary to tuberculosis (TB) is extremely rare. It can be caused by TB enlargement of the head of the pancreas, TB lymphadenitis, TB stricture of the biliary tree, or a TB mass of the retroperitoneum. A 29-year-old man with no previous history of TB presented with abdominal pain, obstructive jaundice, malaise and weight loss. Ultrasonography (US), computer tomography (CT) scan and endoscopic retrograde cholangiopancreatography (ERCP) were suggestive of a stenosis of the distal common bile duct (CBD) caused by a mass in the posterior head of the pancreas. Tumor markers, CEA and CA19-9 were within normal limits. At operation, an enlarged, centrally caseous lymph node of the posterior head of the pancreas was found, causing inflammatory stenosis and a fistula with the distal CBD. The lymph node was removed and the bile duct resected and anastomosed with the Roux-en Y jejunal limb. Histology and PCR based-assay confirmed tuberculous lymphadenitis. After an uneventful postoperative recovery, the patient was treated with anti-tuberculous medication and remained well 2.5 years later. Though obstructive jaundice secondary to tuberculous lymphadenitis is rare, abdominal TB should be considered as a differential diagnosis in immunocompromised patients and in TB endemic areas. Any stenosis or fistulation into the CBD should also be taken into consideration, and biliary bypass surgery be performed to both relieve jaundice and prevent further stricture.

[Pancreatic tuberculosis: an unusual cause of obstructive jaundice accessible to endoscopic management]

Tuberculosis of the pancreas is unusual and often secondary to generalized tuberculosis. In most cases clinical presentation is obstructive jaundice due to pancreatic mass lesion. Although diagnosis is usually obtained after resection of the mass lesion, endoscopic procedures might avoid non-necessary surgical procedure. We report a clinical case of pancreatic tuberculosis diagnosed by endoscopic ultrasound guided fine needle aspiration biopsy and treated by biliary stenting.

Biliary tuberculosis causing cicatricial stenosis after oral anti-tuberculosis therapy

A 36-year-old Philippine woman presented with dark urine and yellow sclera. Endoscopic retrograde cholangiopancreatography (ERCP) confirmed dilatation of the intrahepatic bile ducts and also showed an irregular stricture of the common hepatic duct at the liver hilum. Histological examination of biopsies from the bile duct revealed epithelioid cell granulomas and caseous necrosis. Tubercle bacilli were then detected on polymerase chain reaction (PCR) testing of the bile, giving the diagnosis of biliary tuberculosis. Although microbiological cure was confirmed, the patient developed cicatricial stenosis of the hepatic duct. She underwent repeated treatments with endoscopic biliary drainage (EBD) tubes and percutaneous transhepatic biliary drainage (PTBD) tubes, and the stenosis was corrected after 6 years. We present a case of tuberculous biliary stricture, a condition that requires careful differentiation from the more common malignancies and needs long-term follow-up due to the risk of post-treatment cicatricial stenosis, although it is rare.

Resolution of tuberculous biliary stricture after medical therapy

Tuberculosis (TB) is a very rare cause of biliary stricture that is difficult to diagnose and usually requires surgical intervention in order to rule out underlying malignant etiology. We report a 56-year-old man presented with jaundice, weight loss and poor appetite. Initial work up showed the dilated biliary system secondary to distal common bile duct stricture. Investigations to define the etiology of this stricture showed inconclusive brush cytology with absent abdominal masses and lymph nodes but enlarged mediastinal lymph nodes. Biopsy from these lymph nodes showed a non-caseating epitheliod granuloma with negative acid fast bacilli (AFB) stain. The patient had a dramatic response to empirical anti-tuberculosis therapy. Six weeks later, culture from lymph nodes was positive for Mycobacterium tuberculosis.

Three months later, follow-up cholangiogram showed complete resolution of the stricture with normalization of liver enzymes 6 mo after starting anti-tuberculosis therapy. Treatment was continued for 12 mo and the patient had a normal life with normal liver enzymes and regression of the mediastinal lymph nodes at the time when he was reported in this paper.

Although 16 cases of tuberculous biliary stricture are available in the English literature, up to our knowledge, this is the second published report of tuberculous biliary stricture, which resolved completely after medical therapy alone and the second reported case from the Middle East. This report emphasizes the importance of keeping TB as a possibility of biliary stricture in this part of the world.