Endoscopic features of esophageal tuberculosis

Foregut tuberculosis: Too close but miles apart

The worldwide burden of tuberculosis (TB) has increased and it can involve virtually any organ of the body. Intestinal TB accounts for about 2% of the cases of TB worldwide. The ileocecal region is the most commonly affected site, and the foregut is rarely involved. The reported incidence is approximately 0.5%. Esophageal TB presents with dysphagia, weight loss, and hematemesis in rare cases. Gastroduodenal TB usually manifests with symptoms such as nausea, vomiting, weight loss, and sometimes with gastric outlet obstruction. Gastroscopy may reveal shallow ulcers in stomach and duodenal deformity when underlying TB is suspected, therefore histopathology plays pivotal role. On computed tomography, duodenal TB typically manifests as duodenal strictures predominantly, accompanied by extrinsic compression, and occasionally as intraluminal mass. But their diagnosis can easily be missed if proper biopsies are not taken and samples are not sent for GeneXpert testing, TB polymerase chain reaction investigation and histopathological analysis. Despite being in close proximity to the lungs, the esophagus and stomach are rare sites of TB. The reasons could be low gastric pH and acidity which does not let mycobacterium grow. But there are various case reports of TB involving the foregut. We have summarized the rare cases of foregut TB in different sections and highlighted the importance of esophagogastroduodenoscopy, histopathology and advanced techniques like endoscopic ultrasound in establishing the diagnosis.

Esophageal Tuberculosis: A Systematic Review

Involvement of esophagus with tuberculous infection is a rare form of extrapulmonary tuberculosis. Secondary esophageal tuberculosis is much more common than primary TB. The most common source of secondary esophageal involvement is tuberculous mediastinal lymphadenitis. Esophageal tuberculosis mimics carcinoma esophagus. Clinical features are same and it is difficult on imaging studies also to differentiate the two pathologies. Misdiagnosis is common. The disease is medically curable; therefore, it is essential to make all efforts to diagnose the pathology with non-surgical diagnostic modalities in suspected cases so as to save patients from the trauma of major surgical resection. Surgical intervention is indicated for failed medical therapy and complications. A total of 133 cases of esophageal TB have been reported till date. The authors encountered 4 cases of esophageal TB between April 2011 and March 2019. The aim of this article is to present our data and to provide comprehensive review of the available literature on this pathology in order to gain a better understanding of diagnostic methods and provide guidelines for the diagnosis and management of esophageal TB.

Role of Endoscopy in Esophageal Tuberculosis: A Narrative Review

Esophageal tuberculosis (ET) is a rare infectious disease of the gastrointestinal tract. Awareness of ET is deficient due to its low incidence. Unexplained dysphagia and upper gastrointestinal bleeding are the most common symptoms of ET. The prognosis is generally good if patients are diagnosed properly and receive anti-tubercular treatment promptly. However, ET is difficult to differentiate from other diseases. Endoscopic techniques such as esophagogastroduodenoscopy (EGD), endoscopic ultrasonography (EUS), contrast-enhanced harmonic endoscopic ultrasonography (CH-EUS), elastography, and endoscopic ultrasound--guided fine-needle aspiration (EUS-FNA) improve the diagnosis of ET. Thus, the characteristics of ET and other difficult-to-detect diseases according to EGD and EUS were summarized. Intriguingly, there is no literature relevant to the application of CH-EUS and elastography in ET. The authors' research center was first in introducing CH-EUS and elastography into the field of ET. The specific manifestation of ET based on CH-EUS was discovered for the first time. Correlative experience and representative cases were shared. The role of endoscopy in acquiring esophageal specimens and treatment for ET was also established. In this review, we aim to introduce a promising technology for the diagnosis and treatment of ET.

Oesophageal Tuberculosis: A Systematic Review Focusing on Clinical Management

Oesophageal tuberculosis, an uncommon form of extrapulmonary tuberculosis, has been reported mainly as small case series and the literature is heterogeneous. A systematic review to characterize the clinical presentation, evaluation and management of oesophageal tuberculosis was performed. Electronic databases were searched with keywords: esophagus OR esophageal AND tuberculosis. We included original papers and case series (> 4 patients) with oesophageal tuberculosis. Twenty-two studies reporting 311 patients were included. Mean age in most of the studies was 31-51 years and male gender constituted 50.5% patients. Dysphagia (72.3%), odynophagia (22.4%) and chest pain (31.3%) were predominant symptoms. Mid-oesophagus was the commonest site of involvement (88%). Endoscopic findings included ulcers (59.9%), submucosal bulge (31.7%), extrinsic compression (24.8%) and pseudotumour (5.8%). On endoscopic ultrasound, presence of hypoechoic (69.5%), heteroechoic (47.6%) and matted (86.3%) mediastinal lymph nodes and oesophageal wall involvement (67.3%) were common findings. Computed tomography showed mediastinal lymphadenopathy (76.5%) and oesophageal thickening (52.1%). Diagnosis was confirmed by granuloma (72.3%) and acid fast bacilli positivity (32.5%) in mots patients. Response to antitubercular therapy was excellent; 97.7% patients recovered and 2.3% patients died. Surgery (14.5%) and oesophageal stenting (11.4%) were required infrequently. Oesophageal tuberculosis should be considered in endemic regions as a cause of dysphagia because early treatment is associated with excellent outcomes.

Esophagomediastinal fistula due to secondary esophageal tuberculosis: report of two cases

Esophageal tuberculosis is rare among digestive system diseases. We herein present two cases of esophageal tuberculosis. One patient presented with a choking sensation and pain in the chest, and the other presented with loss of appetite and emaciation. Both patients had an esophagomediastinal fistula, underwent endoscopic ultrasonography and fine-needle aspiration, were clinically diagnosed with esophageal tuberculosis, received antituberculosis treatment, and exhibited clinical improvement. These two rare cases suggest that the possibility of esophageal tuberculosis should be considered in patients with an esophagomediastinal fistula. Endoscopic ultrasonography and fine-needle aspiration can be performed to assist the diagnosis. Good clinical results can often be achieved with timely antituberculosis treatment.

Esophageal tuberculosis: Uncommon of common

Background and Aim

Esophageal involvement in tuberculosis (TB) is rare and is usually secondary. Data on esophageal TB are scarce. We aimed to analyze clinical and endoscopic features and outcomes of treatment in esophageal TB.

Methods

We retrospectively identified patients with esophageal TB from January 2014 to December 2016 at GB Pant Hospital. Well‐defined granuloma with or without caseation and/or acid‐fast bacilli on staining either from esophageal biopsy or the adjacent mediastinal lymph node fine‐needle aspiration cytology (FNAC) specimen, along with clinical features and response to antitubercular therapy (ATT), were collectively considered to diagnose definite TB. Treatment received and response to therapy were documented and analyzed.

Results

A total of 19 patients had definite esophageal TB, and the median age of patients was 39 years (14–65 years) and 10 (52.6%) patients were female. The most common presenting symptom was dysphagia (n = 16, 84%) followed by odynophagia (n = 8, 42%). On endoscopy, the mid‐esophagus was the most common site of involvement, and findings included ulcers (n = 17), elevated lesions (n = 9), and fistulae (n = 4) in patients. The mediastinal lymphadenopathy was present in all patients, with parenchymal lesions seen in three patients. The endoscopic mucosal biopsies were diagnostic in 11 patients, and in the remaining 8 patients, endoscopic ultrasound‐guided FNAC from the mediastinal lymph nodes was diagnostic. A total of 18 patients completely responded to ATT, and 1 patient had partial response with persistent fistulae requiring additional treatment.

Conclusion

Esophagus involvement is rare in TB; endoscopic mucosal biopsy and EUS‐guided FNAC is diagnostic, and the response to ATT is excellent.

Endoscopic ultrasound in diagnosis of esophageal tuberculosis: 10-year experience at a tertiary care center

Definite diagnosis of esophageal tuberculosis (ET) requires isolation of tubercle bacilli, which is challenging in clinical practice. Difficulty in differentiating ET from other esophageal diseases may well result in a delay in diagnosis. The literature on utility of endoscopic ultrasound (EUS) in diagnosis of ET is insufficient. This study aims to evaluate the role of EUS morphology combined with EUS-guided tissue acquisition in the diagnosis of ET. Data of the 35 patients diagnosed with ET from January 2006 to October 2015 were retrospectively analyzed. After miniprobe and linear echoendoscopic visualization, either linear EUS-guided deep biopsy or EUS-guided fine needle aspiration was performed for tissue acquisition. Histocytopathological results showing caseous necrosis or acid fast bacilli (AFB) or epithelioid granuloma were considered diagnostic. Esophageal wall thickening or mass formation with disruption of the adventitia due to infiltration by adjacent mediastinal lymphadenopathy was typically observed under EUS. Tissue acquisition revealed epithelioid granuloma in 33 patients, caseous necrosis in 13, a positive AFB stain in 14, and nonspecific chronic inflammation in 2. Of the 35 patients, 33 (94.3%) with both characteristic EUS morphology and diagnostic histocytopathology were considered to have an EUS established diagnosis. The remaining two with only nonspecific chronic inflammation received empirical antitubercular chemotherapy based solely on EUS morphology. The two-year follow-up confirmed diagnosis of ET in all patients. While the final diagnosis of ET was based upon two-year follow-up of treatment response to antitubercular medication in addition to caseous necrosis/granuloma/positive-AFB stain revealed by EUS-guided tissue acquisition, an EUS-established diagnosis of ET and medical treatment with long-term follow-up is rational and practical compared with surgery or untreated follow-up.

Case of bronchoesophageal fistula with gastric perforation due to multidrug-resistant tuberculosis

Gastric perforation and tuberculous bronchoesophageal fistula (TBEF) are very rare complications of extrapulmonary tuberculosis (TB). We present a case of pulmonary TB with TBEF and gastric perforation caused by a multidrug-resistant tuberculosis strain in a non-acquired immune deficiency syndrome male patient. The patient underwent total gastrectomy with Roux-en-Y end-to-side esophagojejunostomy and feeding jejunostomy during intravenous treatment with anti-TB medication, and esophageal reconstruction with colonic interposition and jejunocolostomy were performed successfully after a full course of anti-TB medication. Though recent therapies for TBEF have favored medication, patients with severe stenosis or perforation require surgery and medication with anti-TB drugs based upon adequate culture and drug susceptibility testing.

Clinical manifestations and endoscopic characteristics of esophageal tuberculosis: Analysis of 30 cases

AIM: To summarize the endoscopic and clinical characteristics of esophageal tuberculosis to improve diagnosis and reduce misdiagnosis of the disease.

METHODS: Clinical data for 30 patients with ET who underwent electronic gastroscopy and endoscopic ultrasound (EUS) from January 2008 to in December 2012 at the Affiliated Hospital of Medical College of Zunyi were analyzed retrospectively.

RESULTS: The principal symptoms were dysphagia (36.7%), trouble eating (23.3%), retrosternal pain (33.3%), epigastric discomfort (3.3%), and burning pain in the epigastrium (3.3%). Most of esophageal tuberculosis cases were secondary to pulmonary tuberculosis (86.7%). The positive rate of biopsies during endoscopy was low (26.7%). Main EUS characteristics were thickening of the esophagus, obscureness of layered structure, and partial disruption of the adventitia. The lesions in the wall showed hypoecho signals, and enlarged, calcified lymph nodes were visible near the thickened esophagus. None of the cases were misdiagnosed by EUS, and the diagnosis was confirmed by good response to antituberculous chemotherapy in 22 cases. Symptoms of all the cases disappeared after antituberculous chemotherapy; the lesions were reduced or disappeared and no patients received operation.

CONCLUSION: The incidence rate of esophageal tuberculosis is very lower (0.027%). The disease affects patients of any age, but was more common in young people and females. The diagnosis of esophageal tuberculosis should be based on the combination of clinical manifestations, laboratory findings and gastroscopic or EUS findings.

EUS and EUS-FNA for diagnosis of esophageal tuberculosis

AIM: To summarize the endoscopic ultrasonography (EUS) characteristics of esophageal tuberculosis and evaluate the role of EUS and EUS guided fine needle aspiration (EUS-FNA) in the diagnosis and differential diagnosis of esophageal tuberculosis.

METHODS: The clinical data, EUS and EUS-FNA data for 11 patients with esophageal tuberculosis were collected and analyzed retrospectively.

RESULTS: Eight lesions were found in the middle part of the esophagus and 3 in the upper part. The lesions demonstrated as protrusion in 7 cases and ulceration in 4 cases. The layers of the esophageal wall were unclear or disappeared in some cases, and in some patients low echo occupying lesions inside or outside the esophageal wall were showed by EUS. The internal echo of the lesions was heterogeneous, and strong echo spots could be observed. In most cases, enlarged mediastinal lymph nodes were observed. EUS-FNA was used to take biopsy specimens in 7 cases: caseouse necrosis was found in 2 cases; 3 biopsy specimens suggested tuberculosis; no cancer cells were observed in 2 biopsy specimens.

CONCLUSION: EUS can not only show the morphology and internal echo of the lesions, as well as the relationship between the lesions and esophageal wall, but also allow to observe the lymph nodes outside the esophageal wall. Biopsy specimens can be taken by EUS-FNA. EUS and EUS-FNA have high value in the diagnosis of esophageal tuberculosis.

Surgical outcome of esophageal tuberculosis secondary to mediastinal lymphadenitis in adults: experience from single center in China

OBJECTIVE

Esophageal tuberculosis (ET) is a rare disorder often easily misdiagnosed. The aim of this study is to evaluate the clinical features and to highlight the surgical role in treatment and complication management for undiagnosed ET.

METHODS

Between June 2006 and June 2011, six esophageal tuberculosis cases were retrospectively reviewed for their clinical presentations, radiological findings, endoscopic views, surgical treatment and outcome.

RESULTS

The prevalent rate of ET was 0.30%. All patients, aged from 28 to 71 years, presented with dysphagia in six, weight loss in four, and each of retrosternal pain, epigastric pain, fever with cough in one. The duration ranged from two weeks to two months. Involvement of esophagus observed at middle segment in five patients, and at lower segment in one. Endoscopy demonstrated diverticulum with polyps in one patient, ulcer formation in one, and extraneous compression with intact mucosa in four. Five patients underwent video-assisted thoracoscopic surgery (VATS) and one was performed thoracotomy perforation repair for esophagopleural fistula. Diagnoses of all cases were confirmed by histopathological examination and acid-fast bacilli culture. Drug sensitivity test revealed multidrugs resistant mycobacterium tuberculous in one case. All patients discharged and recovered by antituberculous treatment with follow-up time ranged from 12 to 45 months.

CONCLUSIONS

ET should be considered as a causative factor for dysphagia. Surgery should be applied in undiagnosed ET. VATS is useful in improving rate of confirmative diagnosis, and relieving symptom of dysphagia. Thoracotomy repair is reserved for complications of ET.

An Interesting Case of Dysphagia in a HIV Patient

Oesophageal tuberculosis is a rare disease. Tuberculosis (TB) can cause dysphagia due to oesophageal ulcers, Tracheo-Oesophageal Fistulas (TOFs) and an extrinsic compression which is caused by the mediastinal lymph nodes. A 33-year-old gentleman was admitted to our hospital for the evaluation of fever, dysphagia and cough. His chest X-ray was suggestive of miliary tuberculosis. A CT scan of his chest revealed miliary tuberculosis, mediastinal lymphadenopathy and pneumomediastinum. His sputum AFB (acid-fast bacilli) test was positive. An upper gastrointestinal endoscopy revealed a large ulcer in the oesophagus with a fistulous opening which was suggestive of a tracheo-oesophageal fistula. A biopsy from the ulcer was positive for AFB. The test for HIV-1 was positive. A nasogastric feeding tube was placed and the Anti Tubercular Therapy ( ATT) was started. The main aim of this case report is to sensitize the clinicians about the fact that Tuberculosis can present with dysphagia, especially in HIV patients.

Esophageal Tuberculosis Presenting As Dysphagia

Esophageal tuberculosis is rare in both immunocompromised and immunocompetent hosts with advanced pulmonary tuberculosis, even in countries with high prevalence of tuberculosis, e.g., South East Asia. This study presents a case report of esophageal tuberculosis presenting as dysphagia.

[Tuberculous involvement of the esophagus]

Tuberculous involvement of the oesophagus is a rare disease in our country. We report the case of a 76-year-old patient with tuberculous involvement of the oesophagus, who developped an oesophago-lymph nodes fistula. These fistulas are used to be treated by antituberculous chemotherapy. The surgical treatment is rarely needed.

Esophageal tuberculosis with tuberculous peritonitis: a case report

Esophageal tuberculosis is a rare clinical entity diagnosed based on the presence of inflammatory granulomatous lesions caused by Mycobacterium tuberculosis invading the esophageal wall. It is often misdiagnosed as esophageal cancer or esophageal leiomyoma. Esophageal tuberculosis often presents as difficulty in swallowing, chest pain, weight loss and fever. These symptoms are unspecific and are often insufficient to establish a preoperative diagnosis. Esophageal tuberculosis with tuberculous peritonitis is very rare. Here, we report a case of esophageal tuberculosis with tuberculous peritonitis. We also performed a literature review to summarize the diagnosis and treatment of this rare disease.

Crohn's disease of the esophagus

Esophageal damage is an uncommon manifestation of Crohn's disease. The diagnosis should be considered in patients who have other intestinal manifestations of Crohn's disease and present with esophageal symptoms. Diagnosis should be based on history, known extraesophageal Crohn's disease, endoscopic evaluation with biopsy, and exclusion of gastroesophageal reflux disease. Mild disease should be treated with acid suppression and a short course of steroids. 5-aminosalicylates are not likely to be effective due to drug release characteristics. Patients who have moderate to severe disease should be treated aggressively with acid suppression, a longer course of steroids, and consideration of immunosuppressive therapy with 6-mercaptopurine or azathioprine. Infliximab or other anti-tumor necrosis factor therapy also can be considered in refractory patients to try to prevent the complications of stricturing and fistula formation. In those patients who develop strictures of the esophagus, treatment with balloon dilatation of the stricture followed by injection of a long-acting steroid such as triamcinolone will help to alleviate symptoms. Surgery may be required for severe, refractory symptoms, but it has a high morbidity in this population.

Endoscopic findings and clinical features of esophageal tuberculosis

OBJECTIVE

Mycobacterial involvement of the esophagus is rare. Similar abnormal lesions of the esophagus may be confused with esophageal cancer and deep fungal infections. We studied the clinical features, endoscopic findings, the role of histopathology, and the outcome of antituberculosis treatment in patients with esophageal tuberculosis.

METHODS

A single center based, retrospective study was performed. We reviewed the clinical and pathological records of patients with esophageal tuberculosis that were clinically diagnosed from 1997 to 2006.

RESULTS

Esophageal tuberculosis, confirmed by histology, was found in six patients. Five patients presented with local symptoms. The mean number of endoscopic sessions for a diagnosis was 1.8 sessions (range 1-3). For the histopathology, caseous necrosis was found in four patients but positive acid fast bacilli stains and tuberculosis-polymerase chain reaction were not detected. Patients diagnosed with esophageal tuberculosis tolerated medical therapy and responded well.

CONCLUSION

Because esophageal tuberculosis presents with various, diverse clinical features, and endoscopic findings, it is difficult to diagnose at one session of endoscopy. However, esophageal tuberculosis should be considered in the differential diagnosis if ulcerative lesions were found in the mid esophagus.

Dysphagia due to tuberculosis

OBJECTIVE

Dysphagia due to tuberculosis is rare in both the developing countries with high prevalence rates and the western population following the recent upsurge linked to the AIDS and immigration.

AIM

To study tuberculosis as an aetiological factor in the causation of dysphagia and to evaluate the outcome of anti-tubercular treatment and surgical results in these patients.

METHODS

Retrospective review of experience with 14 cases of dysphagia due to tuberculosis encountered between 1996 and 2003.

RESULTS

The duration of symptoms ranged between 3 and 18 months. All of them underwent oesophagogastroscopy, barium swallow, fiberoptic bronchoscopy and CT scan of the chest. The aetiology was subcarinal node enlargement in seven, tracheo-oesophageal fistula in four, oesophageal ulcer in two and cervical node suppuration in one. Tuberculous involvement was confirmed by pathological examination in all patients. All of them received anti-tuberculous therapy. Seven patients required surgery, transthoracic repair of tracheo-oesophageal fistula in four patients, one patient required subcarinal node excision and two needed abscess drainage. There were no mortalities and there was complete relief of dysphagia in all of them.

CONCLUSIONS

Tuberculosis as a causative factor for dysphagia should be considered in regions with high incidences of tuberculosis and in immunocompromised patients. Treatment with anti-tuberculous therapy is effective. Surgery is required only for complications of tuberculosis.

A solitary tuberculous ulcer in the oesophagus

A 48-year-old woman born in Pakistan was evaluated for dysphagia. Endoscopy showed a solitary ulcerative oesophageal lesion. Cultures were positive for mycobacterium tuberculosis. Additional imaging showed no other manifestations of tuberculosis. Oesophageal tuberculosis is a rare entity, especially as a primary manifestation defined as involvement of the oesophagus without signs of disseminated disease. Therefore, this case was classified as primary oesophageal tuberculosis.