Bronchocentric granulomatosis

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List of terms related to Bronchocentric granulomatosis

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Nikhila Palle, M.B.B.S

Overview

Bronchocentric granulomatosis is not a disease per se but a histopathological finding of the bronchi and bronchioles. It is commonly seen in asthmatic patients with allergic bronchopulmonary aspergillosis, but can also be observed in non-asthmatics with no identifiable etiological agent.Katzenstein AL, Liebow AA, Friedman PJ. Bronchocentric granulomatosis, mucoid impaction, and hypersensitivity reactions to fungi. Am Rev Respir Dis 1975;111:497-537.

Historical Perspective

• Bronchocentric granulomatosis was first discovered by Liebow, in 1973.

Pathophysiology

• There are two patterns observed in Bronchocentric granulomatosis, the more common pattern is observed in young men suffering from asthma.
• The pathogenesis of bronchocentric granulomatosis is characterized by an immunological reaction related to chronic eosinophilic pneumonia and allergic bronchopulmonary aspergillosis. There is necrotizing granulomatous inflammation of the bronchi and bronchioles.
• The [gene name] gene/Mutation in [gene name] has been associated with the development of [disease name], involving the [molecular pathway] pathway.
• On gross pathology, [feature1], [feature2], and [feature3] are characteristic findings of [disease name].
• On microscopic histopathological analysis, [feature1], [feature2], and [feature3] are characteristic findings of [disease name].

Causes

• [Disease name] may be caused by either [cause1], [cause2], or [cause3].
• [Disease name] is caused by a mutation in the [gene1], [gene2], or [gene3] gene[s].
• There are no established causes for [disease name].

Differentiating [disease name] from other Diseases

• Bronchocentric granulomatosis must be differentiated from other diseases that cause fever, cough and chest pain, such as:

• Tuberculosis
• [Differential dx2]
• [Differential dx3]

Epidemiology and Demographics

• The incidence and prevalence of Bronchocentric granulomatosis is not known.

Age

• Patients of all age groups may develop Bronchocentric granulomatosis.

• [Disease name] is more commonly observed among patients aged [age range] years old.
• Bronchocentric granulomatosis is more commonly observed among elderly patients.

Gender

• [Disease name] affects men and women equally.

• [Gender 1] are more commonly affected with [disease name] than [gender 2].
• The [gender 1] to [Gender 2] ratio is approximately [number > 1] to 1.

Race

• There is no racial predilection for [disease name].

• [Disease name] usually affects individuals of the [race 1] race.
• [Race 2] individuals are less likely to develop [disease name].

Risk Factors

• Common risk factors in the development of [disease name] are [risk factor 1], [risk factor 2], [risk factor 3], and [risk factor 4].

Natural History, Complications and Prognosis

• The majority of patients with [disease name] remain asymptomatic for [duration/years].
• Early clinical features include [manifestation 1], [manifestation 2], and [manifestation 3].
• If left untreated, [#%] of patients with [disease name] may progress to develop [manifestation 1], [manifestation 2], and [manifestation 3].
• Common complications of [disease name] include [complication 1], [complication 2], and [complication 3].
• Prognosis is generally [excellent/good/poor], and the [1/5/10­year mortality/survival rate] of patients with [disease name] is approximately [#%].

Diagnosis

Diagnostic Criteria

• The diagnosis of [disease name] is made when at least [number] of the following [number] diagnostic criteria are met:

• [criterion 1]
• [criterion 2]
• [criterion 3]
• [criterion 4]

Symptoms

• Symptoms of Bronchocentric granulomatosis may include the following:

• Cough
• Wheezing
• Fever
• Dyspnea
• Blood eosinophilia

Physical Examination

• Patients with [disease name] usually appear [general appearance].
• Physical examination may be remarkable for:

• [finding 1]
• [finding 2]
• [finding 3]
• [finding 4]
• [finding 5]
• [finding 6]

Laboratory Findings

• There are no specific laboratory findings associated with [disease name].

• A [positive/negative] [test name] is diagnostic of [disease name].
• An [elevated/reduced] concentration of [serum/blood/urinary/CSF/other] [lab test] is diagnostic of [disease name].
• Other laboratory findings consistent with the diagnosis of [disease name] include [abnormal test 1], [abnormal test 2], and [abnormal test 3].

Imaging Findings

• There are no [imaging study] findings associated with [disease name].

• [Imaging study 1] is the imaging modality of choice for [disease name].
• On [imaging study 1], [disease name] is characterized by [finding 1], [finding 2], and [finding 3].
• [Imaging study 2] may demonstrate [finding 1], [finding 2], and [finding 3].

Other Diagnostic Studies

• [Disease name] may also be diagnosed using [diagnostic study name].
• Findings on [diagnostic study name] include [finding 1], [finding 2], and [finding 3].

Treatment

Medical Therapy

• There is no treatment for [disease name]; the mainstay of therapy is supportive care.

• The mainstay of therapy for [disease name] is [medical therapy 1] and [medical therapy 2].
• [Medical therapy 1] acts by [mechanism of action 1].
• Response to [medical therapy 1] can be monitored with [test/physical finding/imaging] every [frequency/duration].

Surgery

• Surgery is the mainstay of therapy for [disease name].
• [Surgical procedure] in conjunction with [chemotherapy/radiation] is the most common approach to the treatment of [disease name].
• [Surgical procedure] can only be performed for patients with [disease stage] [disease name].

Prevention

• There are no primary preventive measures available for [disease name].

• Effective measures for the primary prevention of [disease name] include [measure1], [measure2], and [measure3].

• Once diagnosed and successfully treated, patients with [disease name] are followed-up every [duration]. Follow-up testing includes [test 1], [test 2], and [test 3].