Biliary Sarcoidosis: Early Diagnosis Minimizes the Need for Surgery

Gastrointestinal Manifestations of Sarcoidosis: A State-of-the-Art, Comprehensive Review of the Literature-Practical Clinical Insights and Many Unmet Needs on Diagnosis and Treatment

This comprehensive literature review explores the involvement of the gastrointestinal (GI) tract in sarcoidosis, a multisystem granulomatous disorder of unknown etiology. GI sarcoidosis presents a diagnostic and therapeutic challenge due to its rarity and nonspecific clinical manifestations, including overlap with other gastrointestinal diseases. We conducted a comprehensive screening of articles addressing the clinical features, diagnostic approaches, and treatment strategies for GI sarcoidosis. Our findings reveal that GI sarcoidosis can affect any part of the gastrointestinal tract, with the stomach and small intestine being the most involved. Clinical presentations range from asymptomatic cases to severe complications such as obstruction and perforation, with reflux being a common symptom. Diagnosis is often delayed due to the nonspecific nature of symptoms and the need for histopathological confirmation. Therapeutic approaches are poorly defined, typically involving corticosteroids as the mainstay of treatment. However, the long-term efficacy and safety of these treatments remain uncertain in this patient group, given the significant risks and complications associated with prolonged glucocorticoid therapy. There is a clear need to develop accurate diagnostic protocols to distinguish GI sarcoidosis from other conditions and to establish standardized therapeutic guidelines to optimize patient outcomes. Further research is essential to enhance our understanding and management of this complex condition.

Recent Advances in Intrahepatic Biliary Epithelial Heterogeneity

Biliary epithelium (i.e., cholangiocytes) is a heterogeneous population of epithelial cells in the liver, which line small and large bile ducts and have individual responses and functions dependent on size and location in the biliary tract. We discuss the recent findings showing that the intrahepatic biliary tree is heterogeneous regarding (1) morphology and function, (2) hormone expression and signaling (3), response to injury, and (4) roles in liver regeneration. This review overviews the significant characteristics and differences of the small and large cholangiocytes. Briefly, it outlines the in vitro and in vivo models used in the heterogeneity evaluation. In conclusion, future studies addressing biliary heterogeneity's role in the pathogenesis of liver diseases characterized by ductular reaction may reveal novel therapeutic approaches.

Sarcoidosis of the Bile Duct

Sarcoidosis is an inflammatory disease that affects multiple organs. The lungs are the most commonly involved organs. Although a large proportion of patients with sarcoidosis have liver involvement, bile duct involvement is rare. Here, we present a case of a 56-year-old African American patient presented with painless jaundice because of extrahepatic bile duct sarcoidosis. Our diagnostic approach using endoscopic cholangioscopy with targeted biopsies confirmed the diagnosis. Multiple bile duct stent exchanges were performed to manage the bile duct stricture in addition to medical therapy.

Cocaine Induced Biliary Tree Obstruction in a Middle-Aged Male

A sixty-two-year-old male with a history of extensive crack cocaine use and cholecystectomy presented to the emergency department with abdominal pain, nausea, vomiting, and urobilia. The physical exam revealed moderate epigastric tenderness without scleral icterus or jaundice. The patient's total bilirubin was elevated at 5.2, and his direct bilirubin was 3.7. A computed tomography angiogram (CTA) of the abdomen and pelvis subsequently showed a 3.1 x 2.8 cm mass compressing porta hepatis. A magnetic resonance cholangiopancreatography (MRCP) showed a 4.9 x 3.0 cm mass at the porta hepatis with corresponding biliary duct obstruction at that level. An endoscopic retrograde cholangiopancreatography (ERCP) was performed with stent placement and brush biopsy, which showed predominantly benign ductal epithelium with rare, atypical cells and stenosis of the proximal common bile duct suggestive of cholangiocarcinoma. Cytology was performed on the ductal fluid and was also negative. The carbohydrate antigen (CA) 19-9 level at that time was 94.3. We discussed the possibility of performing surgery as an inpatient, but the patient had various psychosocial issues, which prompted a psychiatric evaluation. He subsequently had an internal-external biliary drain placed. The patient was discharged with plans to obtain an endoscopic ultrasound as an outpatient. He was admitted and discharged several times over the span of six months for various issues. He received an endoscopic ultrasound (EUS) at a surrounding hospital. The results were inconclusive, and a repeat EUS was recommended. On the last admission to the hospital for abdominal pain, a CT scan showed no biliary tree obstruction, which was further confirmed with an MRCP. The internal-external biliary drain was removed without recurrence of hyperbilirubinemia. We suspect that the patient's initial symptoms and radiographic findings of a biliary tree mass may have been induced by extrinsic compression secondary to lymphadenopathy caused by an adulterant used in the cutting process of abused cocaine. This is a rare occurrence that has not been described in the literature. There are associations of cocaine use to pulmonary hilar lymphadenopathy, but not biliary lymphadenopathy. We strongly suspect that this patient's obstructive jaundice and extrinsic biliary tree obstruction were caused by underlying cocaine use.

Imaging of Biliary Involvement in Sarcoidosis: Computed Tomography, Magnetic Resonance Cholangiopancreatography, and Gadolinium Ethoxybenzyl Diethylenetriamine Pentaacetic Acid-Enhanced Magnetic Resonance Imaging Findings

Sarcoidosis is a multisystem disease usually affecting the chest, hilar lymph nodes, and lungs, but can potentially involve any organ; therefore, its clinical presentation may vary. Hepatobiliary involvement is rare, and typically asymptomatic; however, it can lead to cirrhosis, and may require liver transplantation. In this report, we present a rare case of a patient affected by sarcoidosis with hepatobiliary involvement. He presented to our hospital complaining of dyspnea triggered by moderate efforts and oppressive thoracic discomfort. Chest X-ray showed multiple bilateral nodular opacities and enlargement of both hilar regions, confirmed by a subsequent total-body computed tomography scan and positron emission tomography, which also revealed cardiac, splenic, and hepatic involvement. Liver function was studied via gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging, and magnetic resonance cholangiopancreatography (MRCP) was also performed. The diagnosis of sarcoidosis was finally achieved via liver biopsy, revealing non-necrotizing granulomas in the periportal space. The patient was treated with prednisone per os, with regression of all lesions at all levels. Although other cases of biliary sarcoidosis have been described, this report provides a complete image set of Gd-EOB-DTPA-enhanced magnetic resonance and MRCP images that is lacking in the English literature, and which may be useful for diagnosis.

Hepatic sarcoidosis resembling primary sclerosing cholangitis

We report the case of a 29-year-old man who presented with progressive weight loss, night sweats, abdominal pain and pruritus who was found to have obstructive jaundice and cholestatic pattern of liver injury on laboratory workup. Though findings on magnetic resonance cholangiopancreatography were initially concerning primary sclerosing cholangitis, he was ultimately diagnosed with biliary sarcoidosis after a liver biopsy. This case brings attention to the rare phenomenon of hepatic sarcoidosis causing hyperbilirubinemia and highlights the importance of reaching the correct diagnosis early, as the patient’s symptoms improved after initiation of steroids.

Hepatic Silicone Granulomas Secondary to Ruptured Breast Implants: A Report of Two Cases

The differential diagnosis of hepatic granulomas is vast and includes infections, drugs, immunologic diseases, foreign material exposure, and neoplasia. Silicone, whether directly injected into tissues or used as a filler in breast implants, is known to cause localized granulomatous reactions. It can also migrate to other anatomic locations resulting in granulomatous inflammation at a distance. We report two cases of unsuspected hepatic silicone granulomas in patients undergoing liver biopsy for isolated elevated alkaline phosphatase levels, both with a history of ruptured breast implants. These cases highlight the need for awareness of hepatic silicone granulomas as an etiology of elevated liver enzymes in patients with a history of surgical interventions utilizing silica, such as cosmetic surgery.

The Klatskin Tumor That Wasn't: An Unusual Presentation of Sarcoidosis

We present the case of a patient who presented with signs and symptoms associated with a Klatskin tumor. After endoscopic retrograde cholangiopancreatography (ERCP) and biopsy, she was found instead to have granulomatous infiltration of the extrahepatic biliary tree consistent with biliary sarcoidosis. The patient was treated successfully with systemic corticosteroids and azathioprine. She later developed cutaneous, lymphatic, and pulmonary granulomatous disease. Isolated biliary disease is a rare initial presentation of systemic sarcoidosis.

Approaches to the treatment of some of the troublesome manifestations of sarcoidosis

Sarcoidosis can be a major therapeutic challenge given its multiplicity of clinical presentations, variable combination of organ involvement and severity, and unpredictable longitudinal behaviour. Six manifestations of sarcoidosis are especially difficult to manage because of (i) an incomplete knowledge of causation - fatigue and small fibre neuropathy, (ii) the rare occurrence in sarcoidosis - intra-abdominal complications or (iii) the potentially life-threatening consequences in some patients - neurological disease, pulmonary hypertension and hypercalcaemia. In none of these situations have a prospective, double-blind, placebo-controlled trial of any therapy been conducted. Despite this absence of any firm evidence base to support therapeutic recommendations, these six entities can be extremely problematic for the practising clinician. It is for this reason that we have focused in this review on these six disease manifestations and provided a synopsis of each problem together with suggested treatment approaches, based on an analysis of the current literature.