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Zhou J, Zhang L, Liu X, Zhang M, Liu Z, Jin Y, Feng R, Shi J, Li J, Zhang W. Can We Differentiate Between Primary Sjögren Syndrome and Idiopathic Multicentric Castleman Disease Based on the Characteristics of Pulmonary Cysts? J Thorac Imaging 2024:00005382-990000000-00128. [PMID: 38624132 DOI: 10.1097/rti.0000000000000787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
PURPOSE To identify radiological characteristics that could help differentiate cystic lung diseases between primary Sjögren syndrome (pSS) and idiopathic multicentric Castleman disease (iMCD). PATIENTS AND METHODS Patients with pSS or iMCD who had cysts were enrolled. Cyst characteristics (number, size, morphology, and distribution) and other accompanying manifestations (nodules, ground-glass opacities, calcification, and thickening of the bronchovascular bundles and interlobular septa) were compared between them. RESULTS Eleven patients with pSS and 25 patients with iMCD were eligible for our study. Eleven patients with pSS (100.0%) and 23 patients with iMCD (92.0%) had round or oval cysts. None of the patients with pSS had irregular cysts, but 21 (84.0%) patients with iMCD had irregular cysts (P = 0.005). Smooth-walled cysts were present in 11 patients with pSS (100.0%) and 18 patients with iMCD (72.0%). Only 1 patient with pSS (9.1%) exhibited non-smooth-walled cysts, whereas 23 patients with iMCD (92.0%) had non-smooth-walled cysts (P = 0.003). The presence of nodules was common in both groups (P = 1.000). However, the nodules were more likely to be larger and more numerous in patients with iMCD (P < 0.001). Cysts with mural nodules (52.2%) and central nodules (47.8%) were only observed in iMCD (P = 0.007). CONCLUSION Although regular and smooth-walled cysts were common in the 2 diseases, irregular and non-smooth-walled cysts were more often associated with iMCD than pSS. Nodules in iMCD tended to be larger and more numerous, and a close positional relationship between nodules and cysts was only observed in iMCD.
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Affiliation(s)
| | | | | | | | - Ziwei Liu
- Department of Respiratory and Critical Care Medicine
| | - Ye Jin
- Department of Medical Research Center
| | - Ruie Feng
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Juhong Shi
- Department of Respiratory and Critical Care Medicine
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Dwikat MF, Azar J, Rabayah R, Salameh R, Abdeljaleel F, Almadhoun W, Ayyad A, Ibraik F, Safarini O. Folliculin gene-negative Birt-Hogg-Dube syndrome: a case report. Ann Med Surg (Lond) 2024; 86:1055-1060. [PMID: 38333273 PMCID: PMC10849385 DOI: 10.1097/ms9.0000000000001496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 11/01/2023] [Indexed: 02/10/2024] Open
Abstract
Introduction and importance Birt-Hogg-Dube (BHD) is a rare genetic disorder that results from a mutation in the folliculin (FLCN) gene. Manifestations include pulmonary cysts, fibrofolliculomas, renal tumors, and pneumothoraces. Genetic testing can be used to confirm the diagnosis when suspected. BHD syndrome is diagnosed in patients with negative FLCN gene results using diagnostic criteria. Case presentation A male in his 20s presented with recurrent pneumothoraces. A physical examination revealed bumps on his face and upper body. A chest computed tomography scan revealed cystic lesions. Blood tests, ESR, and CRP levels were unremarkable. Punch skin biopsy revealed fibrofolliculomas. Genetic testing for the FLCN mutation returned negative. His history, physical exam, imaging, and histopathology suggested BHD syndrome despite having a negative family history and genetic analysis. Eventually, the patient was diagnosed with FLCN gene-negative BHD syndrome. Clinical discussion More than a hundred families have been identified to have BHD worldwide. There are a few cases in the literature describing patients phenotypically presenting with BHD despite having a negative genetic analysis. One study in Japan found 16 out of 157 individuals having a clinical presentation of BHD with no mutations. Also, decreased expression of the FLCN mRNA may lead to BHD. Conclusion BHD syndrome can present with a negative FLCN gene mutation; however, patients must meet the known diagnostic criteria such as criteria made by Menko et al., Gupta et al., and Schmidt et al. in order to have a diagnosis of BHD syndrome. Also, a qualitative decrease of FLCN with the absence of mutations may also lead to BHD.
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Affiliation(s)
| | - Jehad Azar
- Pulmonary and Critical Care Department, Cleveland Clinic Foundation: Cleveland Clinic, Ohio
| | - Rama Rabayah
- Internal Medicine Department, Ibn Sina Specialized Hospital, Jenin
| | - Ruba Salameh
- Internal Medicine Department, MedStar Union Memorial Hospital, Maryland, USA
| | | | | | - Alaa Ayyad
- Internal Medicine Department, Palestine Medical Complex, Ramallah, Palestine
| | - Farah Ibraik
- Department of Internships, Ministry of Health, Nablus
| | - Omar Safarini
- Department of Internships, Ministry of Health, Nablus
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Characteristic Chest Computed Tomography Findings for Birt-Hogg-Dube Syndrome Indicating Requirement for Genetic Evaluation. Diagnostics (Basel) 2023; 13:diagnostics13020198. [PMID: 36673012 PMCID: PMC9858281 DOI: 10.3390/diagnostics13020198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 12/26/2022] [Accepted: 12/28/2022] [Indexed: 01/06/2023] Open
Abstract
Background: Chest computed tomography (CT) findings are important for identifying Birt−Hogg−Dube (BHD) syndrome. However, the predictive power of classical criteria for chest CT findings is weak. Here, we aimed to identify more specific chest CT findings necessitating genetic examination for FLCN gene mutations. Methods: From June 2016 to December 2017, we prospectively enrolled 21 patients with multiple bilateral and basally located lung cysts on chest CT with no other apparent cause, including cases with and without spontaneous primary pneumothorax. All enrolled patients underwent FLCN mutation testing for diagnosis confirmation. Results: BHD was diagnosed in 10 of 21 enrolled patients (47.6%). There were no differences in clinical features between the BHD and non-BHD groups. Maximal cyst diameter was significantly greater in the BHD group (mean ± standard deviation; 4.1 ± 1.1 cm) than in the non-BHD group (1.6 ± 0.9 cm; p < 0.001). Diversity in cyst size was observed in 100.0% of BHD cases and 18.2% of non-BHD cases (p = 0.001). Morphological diversity was observed in 100.0% of BHD cases and 54.6% of non-BHD cases (p = 0.054). Areas under the receiver operating characteristic curves for predicting FLCN gene mutations were 0.955 and 0.909 for maximal cyst diameter and diversity in size, respectively. The optimal cut-off value for maximal diameter FLCN mutations prediction was 2.1 cm (sensitivity: 99%; specificity: 82%). Conclusions: Reliable chest CT features suggesting the need for FLCN gene mutations screening include variations in cyst size and the presence of cysts > 2.1 cm in diameter, predominantly occurring in the bilateral basal lungs.
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Cabeza Martínez B, Giménez Palleiro A, Mazzini Florindez SP. Cystic lung disease. RADIOLOGIA 2022; 64 Suppl 3:265-276. [PMID: 36737165 DOI: 10.1016/j.rxeng.2022.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 09/27/2022] [Indexed: 02/05/2023]
Abstract
The term cystic lung disease encompasses a heterogeneous group of entities characterised by round lung lesions that correspond to cysts with fine walls, which usually contain air. The differential diagnosis of these lesions can be challenging, requiring both clinical and radiological perspectives. Entities such as pulmonary emphysema and cystic bronchiectasis can simulate cystic disease. High-resolution computed tomography (HRCT) is the imaging technique of choice for the evaluation and diagnosis of cystic lung disease, because it confirms the presence of lung disease and establishes the correct diagnosis of the associated complications. In many cases, the diagnosis can be established based on the HRCT findings, thus making histologic confirmation unnecessary. For these reasons, radiologists need to be familiar with the different presentations of these entities. A wide variety of diseases are characterised by the presence of diffuse pulmonary cysts. Among these, the most common are lymphangioleiomyomatosis, which may or may not be associated with tuberous sclerosis, Langerhans cell histiocytosis, and lymphocytic interstitial pneumonia. Other, less common entities include Birt-Hogg-Dubé syndrome, amyloidosis, and light-chain deposit disease. This article describes the characteristics and presentations of some of these entities, emphasizing the details that can help differentiate among them.
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Affiliation(s)
- B Cabeza Martínez
- Servicio de Radiodiagnóstico, Hospital Clínico San Carlos, Madrid, Spain.
| | - A Giménez Palleiro
- Servicio de Radiodiagnóstico, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - S P Mazzini Florindez
- Servicio de Radiodiagnóstico, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
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5
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Cabeza Martínez B, Giménez Palleiro A, Mazzini Florindez S. Enfermedades quísticas pulmonares. RADIOLOGIA 2022. [DOI: 10.1016/j.rx.2022.09.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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6
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Imaging of Cystic Lung Disease. Radiol Clin North Am 2022; 60:951-962. [DOI: 10.1016/j.rcl.2022.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Birt-Hogg-Dubé syndrome encountered at rare lung disease clinic in Anhui province, China. Orphanet J Rare Dis 2022; 17:203. [PMID: 35578266 PMCID: PMC9112470 DOI: 10.1186/s13023-022-02362-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 05/08/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Diagnosis of rare diseases remains a challenge in China. We describe our experience with Birt-Hogg-Dubé syndrome (BHDS) encountered at a Rare Lung Disease Clinic recently established in China.
Methods
After the first patient with BHDS was recognized in 2017, a Rare Lung Disease Clinic with a multidisciplinary team of specialists was established. We retrospectively analyzed the data of consecutive patients with BHDS encountered from inception to December 2021.
Results
There were 1, 1, 15, 12 and 21 cases with BHDS diagnosed from year 2017 to 2021, respectively. All 50 patients (34 women) were of Han race with a mean age of 47.4 years. The common manifestations were pulmonary cysts (98%), pneumothorax (54%) and skin lesions (68%). Renal cancer was detected in two patients and renal angiomyolipoma in four other patients. The main presentations leading to diagnosis were pneumothorax (42%), family screening (36%), and lung cysts identified on radiologic imaging (20%). The average delay in diagnosis was 8.3 years, and 4.7 years in patients with only pulmonary cysts. The most frequent pathogenic variant was c.1285del/dup on exon 11 (23%) among 44 patients confirmed by genetic testing. Renal cancer has not been found on follow-up surveillance thus far.
Conclusions
Increasing number of patients with BHDS are being recognized in China, facilitated by establishment of a Rare Lung Disease Clinic. Pulmonary cysts and pneumothorax were commonly encountered features, but skin lesions appeared to be more prevalent in Chinese subjects than previously reported in other Asian countries.
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McCarthy C, Gupta N, Johnson SR, Yu JJ, McCormack FX. Lymphangioleiomyomatosis: pathogenesis, clinical features, diagnosis, and management. THE LANCET. RESPIRATORY MEDICINE 2021; 9:1313-1327. [PMID: 34461049 DOI: 10.1016/s2213-2600(21)00228-9] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 05/02/2021] [Accepted: 05/07/2021] [Indexed: 01/15/2023]
Abstract
Lymphangioleiomyomatosis (LAM) is a slowly progressive, low-grade, metastasising neoplasm of women, characterised by infiltration of the lung parenchyma with abnormal smooth muscle-like cells, resulting in cystic lung destruction. The invading cell in LAM arises from an unknown source and harbours mutations in tuberous sclerosis complex (TSC) genes that result in constitutive activation of the mechanistic target of rapamycin (mTOR) pathway, dysregulated cellular proliferation, and a programme of frustrated lymphangiogenesis, culminating in disordered lung remodelling and respiratory failure. Over the past two decades, all facets of LAM basic and clinical science have seen important advances, including improved understanding of molecular mechanisms, novel diagnostic and prognostic biomarkers, effective treatment strategies, and comprehensive clinical practice guidelines. Further research is needed to better understand the natural history of LAM; develop more powerful diagnostic, prognostic, and predictive biomarkers; optimise the use of inhibitors of mTOR complex 1 in the treatment of LAM; and explore novel approaches to the development of remission-inducing therapies.
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Affiliation(s)
- Cormac McCarthy
- Department of Respiratory Medicine, St Vincent's University Hospital, University College Dublin, Dublin, Ireland.
| | - Nishant Gupta
- Division of Pulmonary, Critical Care, and Sleep Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Simon R Johnson
- Division of Respiratory Medicine, University of Nottingham, NIHR Respiratory Biomedical Research Centre, Nottingham, UK
| | - Jane J Yu
- Division of Pulmonary, Critical Care, and Sleep Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Francis X McCormack
- Division of Pulmonary, Critical Care, and Sleep Medicine, University of Cincinnati, Cincinnati, OH, USA
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9
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Hu X, Zhang G, Chen X, Xu KF. Birt-Hogg-Dubé syndrome in Chinese patients: a literature review of 120 families. Orphanet J Rare Dis 2021; 16:223. [PMID: 34001170 PMCID: PMC8130425 DOI: 10.1186/s13023-021-01848-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Accepted: 05/04/2021] [Indexed: 01/22/2023] Open
Abstract
Objective To clarify the epidemiological and clinical features of Birt–Hogg–Dubé syndrome (BHDS) in Chinese patients. Methods We identified reports on Chinese patients with BHDS by searching the China Academic Journals Database, Wanfang Chinese Database, and PubMed databases, either in Chinese or English languages published from January 1, 2008 to December 31, 2020. Studies without sufficient clinical data were excluded and cases under 18 years old were excluded. Results Twenty papers were included and comprised 120 families with 221 cases. Most families with BHDS were reported from institutions in Beijing (66.7%) and Jiangsu Province (15.8%); 80.8% of cases were reported within the past five years. The average duration from clinical presentation to diagnosis was 9.6 years. The average age was 47.0 ± 13.9 years (range, 18–84 years) and the ratio of male to female was 1:1.6. The most common manifestations of BHDS were multiple pulmonary cysts (92.4%), spontaneous pneumothorax (71.0%), skin lesions (18.1%) and renal tumors (3.6%). Pulmonary cysts were predominantly distributed in the lower lobe on chest CT imaging. Family history of spontaneous pneumothorax was identified in 84.7% of the families and average number of pneumothoraxes was 1.8 (range, 1–6). The FLCN gene mutation c.1285dupC/delC in exon 11 was the most frequent mutation observed (17.4% of patients). The recurrence rate of pneumothorax after conservative treatment (including tube thoracostomy) was 29/41 (71%) while the pneumothorax recurred after surgical treatment (pulmonary bullectomy or pleurodesis) in only 4/37 (11%). Conclusions Although BHDS has been increasingly reported in the recent years, only minority of families were reported from institutions outside of Beijing and Jiangsu Province. The dominant clinical manifestations were pulmonary cysts associated with recurrent pneumothorax, while skin lesions and renal tumors were less commonly reported. Delayed diagnosis along with suboptimal management appear to represent critical challenges for Chinese patients with BHDS.
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Affiliation(s)
- Xiaowen Hu
- Department of Pulmonary and Critical Care Medicine, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China.
| | - Guofeng Zhang
- Department of Pulmonary and Critical Care Medicine, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China.,WanNan Medical College, Wuhu, Anhui, China
| | - Xianmeng Chen
- Department of Pulmonary and Critical Care Medicine, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
| | - Kai-Feng Xu
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Beijing, China
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Reilly D, Pourzand L, Chima-Melton C. Birt-Hogg-Dubé Syndrome presenting with chronic progressive dyspnea. Respir Med Case Rep 2021; 33:101407. [PMID: 33912385 PMCID: PMC8065275 DOI: 10.1016/j.rmcr.2021.101407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 03/08/2021] [Accepted: 03/22/2021] [Indexed: 11/09/2022] Open
Abstract
Birt-Hogg-Dubé Syndrome (BHDS) is a rare autosomal dominant disease which manifests with cutaneous hamartomas, lung cysts and renal carcinomas. A wide spectrum of phenotypic expression and few visible manifestations makes BHDS a likely under-recognized entity. Diffuse cystic lung disease (DCLD) is the typical pulmonary manifestation of BHDS, which in the absence of other specific findings carries a broad differential diagnosis. Unlike many other causes of DCLD, BHDS is not known to present with symptomatic pulmonary dysfunction. We report a typical case of BHDS with an atypical presentation – chronic progressive dyspnea. The unusual presentation provides an opportunity to discuss the differential for DCLD and highlights the importance of maintaining an index of suspicion for BHDS even when symptoms appear inconsistent with the diagnosis. Also examined is the management of BHDS patients and their immediate relatives, and recommendations for the treatment of obstructive sleep apnea (OSA) with continuous positive airway pressure (CPAP) given the potential risk of pneumothorax in this group.
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Affiliation(s)
- David Reilly
- University of California Los Angeles, Department of Radiology, 200 UCLA Med Plaza, Los Angeles, CA, USA
| | - Lila Pourzand
- University of California Los Angeles, Department of Radiology, 200 UCLA Med Plaza, Los Angeles, CA, USA
| | - Chidinma Chima-Melton
- University of California Los Angeles, Department of Pulmonary & Critical Care Medicine, 200 UCLA Med Plaza, Los Angeles, CA, USA
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11
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Arango-Díaz A, Martínez-de-Alegría-Alonso A, Baleato-González S, García-Figueiras R, Ecenarro-Montiel A, Trujillo-Ariza MV, Lama-López A. CT findings of pulmonary cysts. Clin Radiol 2021; 76:548.e1-548.e12. [PMID: 33741130 DOI: 10.1016/j.crad.2021.02.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Accepted: 02/11/2021] [Indexed: 12/14/2022]
Abstract
Pulmonary cysts are thin-walled radiolucent lesions that may appear in a variety of uncommon disorders known as diffuse cystic lung diseases (DCLD) that essentially includes lymphangioleiomyomatosis (LAM), Langerhans cell histiocytosis (LCH), lymphocytic interstitial pneumonia (LIP), Pneumocystis jiroveci pneumonia (PJP), and Birt-Hogg-Dubé syndrome (BHDS). Moreover, they have been reported in several cases of coronavirus disease 2019 (COVID-19). The purpose of this review is to provide a practical approach for evaluating lung cysts when encountered on CT. We describe the imaging findings of DLCD emphasising their differences in terms of shape and distribution of the cysts, as well as their association with other findings such as nodules or ground-glass opacities, which may help in making a confident diagnosis. We also discuss the link between pulmonary cysts and COVID-19.
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Affiliation(s)
- A Arango-Díaz
- Department of Radiology, Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Santiago de Compostela, Spain.
| | - A Martínez-de-Alegría-Alonso
- Department of Radiology, Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Santiago de Compostela, Spain
| | - S Baleato-González
- Department of Radiology, Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Santiago de Compostela, Spain
| | - R García-Figueiras
- Department of Radiology, Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Santiago de Compostela, Spain
| | - A Ecenarro-Montiel
- Department of Radiology, Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Santiago de Compostela, Spain
| | - M V Trujillo-Ariza
- Department of Radiology, Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Santiago de Compostela, Spain
| | - A Lama-López
- Department of Pulmonology, Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), Santiago de Compostela, Spain
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Louza GF, Nobre LF, Mançano AD, Hochhegger B, Souza AS, Zanetti G, Marchiori E. Lymphocytic interstitial pneumonia: computed tomography findings in 36 patients. Radiol Bras 2020; 53:287-292. [PMID: 33071371 PMCID: PMC7545736 DOI: 10.1590/0100-3984.2019.0107] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Objective To analyze the computed tomography (CT) findings of lymphocytic interstitial pneumonia (LIP). Materials and Methods We retrospectively reviewed the clinical and CT findings of 36 patients with LIP, including 25 women and 11 men, with a mean age of 52.5 years (age range, 22-78 years). Results The main associated diseases with LIP were Sjögren syndrome (42%), human immunodeficiency virus infection (17%), amyloidosis (17%), Sjögren syndrome associated with secondary amyloidosis (11%), idiopathic (8%), and systemic lupus erythematosus (5%). The predominant CT abnormalities were multiple cystic airspaces (n = 35), small nodules (n = 15), ground-glass opacities (n = 13), bronchiectasis and/or bronchiolectasis (n = 8), and thickening of the bronchovascular bundles (n = 8). Other CT findings included reticular opacities (n = 7), calcified nodules (n = 4), airspace consolidation (n = 4), emphysema (n = 3), honeycombing (n = 3), lymph node enlargement (n = 2), mosaic attenuation pattern (n = 1), and cavitated nodules (n = 1). Conclusion The main CT findings of LIP were multiple cysts, small nodules, and ground-glass opacities.
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Affiliation(s)
| | - Luiz Felipe Nobre
- Universidade Federal de Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | | | - Bruno Hochhegger
- Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil
| | - Arthur Soares Souza
- Faculdade de Medicina de São José do Rio Preto (Famerp), São José do Rio Preto, SP, Brazil
| | - Gláucia Zanetti
- Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | - Edson Marchiori
- Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
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Elia D, Torre O, Cassandro R, Caminati A, Harari S. Ultra-rare cystic disease. Eur Respir Rev 2020; 29:29/157/190163. [PMID: 32878971 PMCID: PMC9489057 DOI: 10.1183/16000617.0163-2019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Accepted: 03/20/2020] [Indexed: 12/11/2022] Open
Abstract
Diffuse cystic lung diseases include a group of heterogeneous disorders characterised by the presence of cysts within the lung parenchyma, sometimes showing a characteristic computed tomography scan pattern that allows diagnosis. The pathogenetic mechanisms underlying cyst formation in the lung are still not clear and a number of hypotheses have been postulated according to the different aetiologies: ball-valve effect, ischaemic dilatation of small airways and alveoli related to infiltration and obstruction of small vessels and capillaries that supply the terminal bronchioles and connective tissue degradation by matrix metalloproteases. A wide number of lung cyst diseases have been classified into six diagnostic groups according to the aetiology: neoplastic, congenital/genetic, lymphoproliferative, infective, associated with interstitial lung diseases, and other causes. This article focuses on lymphangioleiomyomatosis, pulmonary Langerhans cell histiocytosis and Erdheim–Chester disease, Birt–Hogg–Dubé, follicular bronchiolitis and lymphocytic interstitial pneumonia, light-chain deposition disease and amyloidosis, congenital lung disease associated with aberrant lung development and growth, and cystic lung disease associated with neoplastic lesion. These cystic diseases are epidemiologically considered as ultra-rare conditions as they affect fewer than one individual per 50 000 or fewer than 20 individuals per million. Despite the rarity of this group of disorders, the increasing use of high-resolution computed tomography has improved the diagnostic yield, even in asymptomatic patients allowing prompt and correct therapy and management without the need for a biopsy. Diffuse cystic lung diseases show a characteristic CT scan pattern that often allows for diagnosis, even in asymptomatic patients, allowing prompt correct therapy and management without the needing of a biopsyhttps://bit.ly/2wIUKet
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Xu W, Xu Z, Liu Y, Zhan Y, Sui X, Feng R, Peng M, Li X, Wang J, Meng S, Wang L, Tian X, Zhang X, Xu KF. Characterization of CT scans of patients with Birt-Hogg-Dubé syndrome compared with those of Chinese patients with non-BHD diffuse cyst lung diseases. Orphanet J Rare Dis 2020; 15:176. [PMID: 32631372 PMCID: PMC7336475 DOI: 10.1186/s13023-020-01448-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Accepted: 06/23/2020] [Indexed: 02/07/2023] Open
Abstract
Background and objective The purpose of this study was to create a practical CT-based algorithm to differentiate Birt-Hogg-Dubé (BHD) syndrome from other diffuse cystic lung diseases (DCLD). Methods The study was a retrospective review of the CT images of 33 patients with BHD syndrome, 33 patients with LAM, and 23 patients with NBNL (non-BHD and non-LAM) among DCLD patients. On the basis of the data collected, the CT images were reviewed again to evaluate the characteristics (size, number, distribution, and morphology) of pulmonary cysts. Results Lower lung-predominant cysts were more likely to be found in patients with BHD syndrome than in patients with LAM or in the NBNL DCLD group. In the axial distribution, 18 of 33 patients in BHD group had cysts that were predominantly near the mediastinum, and all the patients in the LAM and NBNL DCLD groups had diffuse cysts. The appearance of fusiform cysts was more easily observed in patients in the BHD group. In total, 58% patients in the BHD group had less than 50 lung cysts, while all patients in the non-BHD group had more than 50 lung cysts. The biggest cyst was located in the lower lobe in 28 of 33 patients in the BHD group, while 11 of 33 patients in LAM group and 10 patients in the NBNL DCLD group had the biggest cyst in the lower lobe. Conclusion The pulmonary cysts in patients with BHD tended to be fusiform, less numerous and located predominantly in the lower lobe and near the mediastinum. These radiologic pulmonary features could assist physicians in differentiating BHD from other DCLDs.
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Affiliation(s)
- Wenshuai Xu
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China
| | - Zhiyan Xu
- Department of Internal Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China
| | - Yaping Liu
- Department of Medical Genetics, School of Basic Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China
| | - Yongzhong Zhan
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China.,Department of Respiratory and Critical Care Medicine, Southern Medical University, Nanfang Hospital, Guangzhou, China
| | - Xin Sui
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China
| | - Ruie Feng
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China
| | - Min Peng
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China
| | - Xue Li
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China
| | - Jun Wang
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China
| | - Shuzhen Meng
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China
| | - Li Wang
- Department of Statistics, School of Basic Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China
| | - Xinlun Tian
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China.
| | - Xue Zhang
- Department of Medical Genetics, School of Basic Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China
| | - Kai-Feng Xu
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China
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15
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Tzilas V, Sgouros D, Almpanis Z, Bouros D, Tzouvelekis A. Cystic lung disease in Birt-Hogg-Dubé syndrome. A case series. Respir Med Case Rep 2020; 30:101081. [PMID: 32420021 PMCID: PMC7218215 DOI: 10.1016/j.rmcr.2020.101081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 05/05/2020] [Indexed: 11/30/2022] Open
Abstract
Birt-Hogg-Dubé syndrome (BHDS) is a rare autosomal dominant inherited disease caused by mutations in the folliculin (FLCN) gene. It is characterized by lung cysts, skin fibrofolliculomas and an increased risk for the development of renal cancer, especially chromophobe. Lung cysts in the context of BHDS are typically lower lobe predominant, paramediastinal, in relation to the fissures and often elliptical shaped. Skin manifestations can easily go unnoticed. Respiratory physicians need to have a high degree of vigilance as they can be the first to suspect the disease in the setting of diffuse cystic lung disease. Meticulous skin examination and referral to a dermatologist is of utmost importance as it can establish the diagnosis in the least invasive way. Correct diagnosis is crucial as it may allow for genetic counseling to the affected family and the implementation of a monitoring strategy for early detection of renal cancer.
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Affiliation(s)
- Vasilios Tzilas
- First Academic Department of Respiratory Medicine, Interstitial Lung Diseases Unit, Hospital for Diseases of the Chest, "Sotiria", Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Dimitrios Sgouros
- First Department of Dermatology-Venereology, Andreas Sygros Hospital, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece
| | - Zannis Almpanis
- Department of Pathology, 251 Hellenic Air Force General Hospital of Athens, Greece
| | - Demosthenes Bouros
- First Academic Department of Respiratory Medicine, Interstitial Lung Diseases Unit, Hospital for Diseases of the Chest, "Sotiria", Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Argyrios Tzouvelekis
- First Academic Department of Respiratory Medicine, Interstitial Lung Diseases Unit, Hospital for Diseases of the Chest, "Sotiria", Medical School, National and Kapodistrian University of Athens, Athens, Greece
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16
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Gianella P, Dulguerov N, Arnoux G, Pusztaszeri M, Seebach JD. Thyroid Rosai-Dorfman disease with infiltration of IgG4-bearing plasma cells associated with multiple small pulmonary cysts. BMC Pulm Med 2019; 19:83. [PMID: 31053123 PMCID: PMC6500019 DOI: 10.1186/s12890-019-0847-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Accepted: 04/15/2019] [Indexed: 12/18/2022] Open
Abstract
Background Rosai-Dorfman disease (RDD) is a rare histiocytosis which involves principally lymph nodes. Thyroid involvement in RDD is a very rare situation, and lung involvement is even rarer. Case presentation We report the case of a 46-year-old woman presenting a painless mass in the right side of the neck and subacute dyspnoea. Computerised tomography (CT) scans of the neck and thorax showed a large thyroid mass causing tracheal stenosis and multiple cystic lesions in both lungs. Subtotal thyroidectomy with a tracheal segment resection and histological analysis confirmed the diagnosis of nodal and extranodal (thyroid, tracheal and probably lung) Rosai-Dorfman disease (RDD) with the presence of increased numbers of IgG4-bearing plasma cells. Clinical, functional and radiological follow up 4 years after surgery without medical treatment did not show any disease progression. Conclusions This case report indicates a benign course of nodal RDD with thyroid and tracheal infiltration following surgical resection, association of typical histological signs of RDD (emperipolesis) with IgG4-related disease features, and that lung cysts might be a manifestation of RDD.
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Affiliation(s)
- Pietro Gianella
- Division of Pulmonary Diseases, Geneva University Hospitals, 4 Rue Gabrielle-Perret-Gentil, 1211, 14, Geneva, Switzerland.
| | - Nicolas Dulguerov
- Division of Head and Neck Surgery, Geneva University Hospitals, Geneva, Switzerland
| | - Grégoire Arnoux
- Department of Clinical Pathology, Geneva University Hospitals, Geneva, Switzerland
| | - Marc Pusztaszeri
- Department of Clinical Pathology, Geneva University Hospitals, Geneva, Switzerland
| | - Jörg D Seebach
- Division of Immunology and Allergy, Geneva University Hospitals, Geneva, Switzerland
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