Mediastinal Node Biopsy Research Articles

The Value of a Pet Scan in Selecting the Best Lymph Node to Biopsy, and Confirming the Diagnosis of Idiopathic Multicentric Castleman Disease with HLH And EBV Viremia in a Previously Healthy Adult.

Castleman disease (CD) is a rare lymphoproliferative disorder having a variegated clinical presentation. Diagnosis of the idiopathic HIV- and HHV8-negative multicentric CD (iMCD) subtype poses a challenge given its non-specific clinical manifestations. iMCD presents as diffuse lymphadenopathy with inflammatory manifestations, primarily driven by interleukin-6 (IL-6). Treatment includes suppressing the inflammation by targeting IL-6 with monoclonal antibodies such as siltuximab and, in severe cases, immuno-chemotherapy to control B- and plasma-cell activation. A previously healthy 43-year-old male presented to the emergency department with fever, night sweats, anasarca, anaemia, thrombocytopenia and acute renal insufficiency. Extensive blood and imaging workup was initiated. Several diagnoses were entertained including viral infections (comprising COVID-19), haemophagocytic lymphohistiocytosis, lymphoma and autoimmune conditions. Initial axillary lymph node biopsy was not diagnostics. A positron emission tomography (PET) scan showed diffuse and symmetrical cervical and hilar/mediastinal lymphadenopathies. A mediastinal lymph node biopsy was then performed and indicated iMCD. The patient was treated with high-dose steroids and siltuximab. An Epstein-Barr virus (EBV) PCR was positive, and rituximab was added to the treatment. The patient recovered and felt well after two months. Non-specific symptoms, non-diagnostic first biopsy and iMCD resemblance to haemophagocytic lymphohistiocytosis further complicated the diagnosis. A PET scan allowed the best selection of a lymph node to be biopsied. Anti-IL6 is the recommended treatment; however, we are lacking information on the duration of siltuximab, and the long-term toxicity and immunosuppressive effect of this treatment. The contribution of EBV reactivation in the development and treatment of iMCD needs further investigation. A positron emission tomography (PET) scan is important to identify the optimal lymph node biopsy site for diagnostics.Epstein-Barr virus reactivation has a role in the pathogenesis and treatment choice of idiopathic multicentric Castleman disease.

Neurosarcoidosis Masquerading as Spinal Stenosis.

A 65-year-old woman was admitted to the neurology department with a suspected demyelinating disease due to complaints of progressive pain and weakness in both upper and lower limbs, as well as urinary incontinence. MRI of the spine revealed complex disc osteophyte with compression of the spinal cord in the cervical and lumbar spine at several vertebral levels, and localized enhancement in the cervical spine at the site of maximal spinal canal stenosis. During her hospitalization, the patient underwent extensive evaluation to rule out any systematic inflammatory diseases, infections, and malignancy. Chest CT revealed bilateral mediastinal lymphadenopathy. Transbronchial mediastinal lymph node biopsy showed numerous non-necrotizing granulomas without evidence of malignancy. After a thorough and careful exclusion of a demyelinating, infectious, and paraneoplastic myelopathies, and based on clinical, radiographic, and pathological findings, the patient was diagnosed with both neurosarcoidosis and spondylotic myelopathy. She was then treated for neurosarcoidosis, including glucocorticosteroids, azathioprine, and a biosimilar of the anti-TNF alpha agent infliximab, resulting in both clinical and radiographic improvement. Intramedullary spinal neurosarcoidosis is very rare and may present with clinical features of spondylotic myelopathy, with typical imaging findings occurring only in areas of spinal canal stenosis.

Neuropathological evidence for neurosarcoidosis is more widespread than imaging suggests.

We present a single case of a 47year old male with a relapsing progressive neurological disease characterised by an infiltrative inflammation of the brain and leptomeninges. Investigations revealed the presence of systemic sarcoidosis which was confirmed histologically following a mediastinal lymph node biopsy. The imaging appearances of the brain and spinal canal lesions were compatible with neurological involvement by the same disease. Despite treatment, the patient deteriorated and died. We present the neuropathological findings, correlate these with the imaging features, and find that neuropathological evidence for disease was in this case strikingly more widespread than predicted by imaging ante-mortem.

Diagnostic yield of endobronchial ultrasound and virtual CT navigational bronchoscopy for biopsy of pulmonary nodules, mediastinal lymph nodes, and thoracic tumors in children.

Endobronchial ultrasound-guided transbronchial biopsy and needle aspiration (EBUS-TBB/EBUS-TBNA) are first line investigative modalities for lung and mediastinal pathology in adults. We aimed to characterize and assess the diagnostic yield of EBUS and virtual CT navigation guided biopsies in children. This single center, retrospective cohort study included patients who underwent radial or linear EBUS procedures (+/- CT navigation) for biopsy of mediastinal lymph nodes, tumors, and pulmonary nodules. Demographic, procedural, and outcome were collected. Sixty procedures were performed in 56 patients aged 2-22 years of age between January 2015 and May 2023. The most common indications for biopsy were pulmonary nodules (45%) and hilar/mediastinal lymphadenopathy (33%). For cases in which a final diagnosis was ascertained by any means, the diagnostic yield for linear EBUS (mediastinal pathology) was 76% and the diagnostic yield from radial EBUS (pulmonary nodules and lung masses) was 85%. The most common diagnoses were infection (45%), malignancy (17%), and sarcoidosis (11%). Among patients in whom infection was the final diagnosis, a total of 31 pathogens were identified. Eighteen were identified on bronchoalveolar lavage and an additional 14 pathogens identified on EBUS-TBB, representing an increase of 77% (p < .005). The sensitivity, specificity, negative and positive predictive values for malignancy detection were 73%, 100%, 94%, and 100%, respectively. EBUS-TBB/TBNA is a safe and effective way to diagnose lung and mediastinal pathology in children. Pediatric interventional pulmonology is a growing field offering minimally-invasive diagnostic opportunities for children in whom more invasive procedures were previously the only option.

The Performance of Rapid On-site Evaluation (ROSE) and Supplemental Cytology Preparations in Endobronchial Ultrasound-Guided Fine Needle Aspiration on Lung and Mediastinal Lymph Node Biopsies: An Institutional Retrospective Snapshot Review

The Performance of Rapid On-site Evaluation (ROSE) and Supplemental Cytology Preparations in Endobronchial Ultrasound-Guided Fine Needle Aspiration on Lung and Mediastinal Lymph Node Biopsies: An Institutional Retrospective Snapshot Review

Comparative Analysis of Results of Transbronchial Needle Aspiration Biopsy of Mediastinal Lymph Nodes with Flexible and Rigid Tracheobronchoscopy for Verification of Mediastinal Lymphadenopathies

Comparative Analysis of Results of Transbronchial Needle Aspiration Biopsy of Mediastinal Lymph Nodes with Flexible and Rigid Tracheobronchoscopy for Verification of Mediastinal Lymphadenopathies

Intrathoracic liver herniation after pericardial fenestration – a case report

BackgroundPericardial effusions with its potential life threatening progression towards cardiac tamponade have to be often managed with surgical intervention. In our case study we describe a complication after a common surgical procedure which has only scarce literature mentions.Case presentationWe present a case of a 22-year-old male patient who underwent subxiphoidal pericardial fenestration, due to symptomatic pericardial effusion with the Chamberlain procedure and biopsy of enlarged mediastinal lymph nodes. The histology report confirmed classical Hodgkin lymphoma and subsequently the patient underwent oncological treatment. Later on he was admitted to the hospital with dyspnoea and chest pain. The initial examinations stated a suspicion for intrathoracic tumour arising from the pericardium or liver. Further investigation revealed symptomatic intrathoracic liver herniation for which the patient underwent laparoscopic surgery with the mobilisation of liver and placement of a perforated Parietene™ composite mesh.ConclusionThe purpose of this case report is to describe a rare complication after pericardial fenestration with its potential clinical implications.

Poor Outcome and Mortality in Patients with Lower Lung-Dominant Sarcoidosis.

Pulmonary sarcoidosis predominantly affects the upper lung zones but sometimes affects the lower lung zones. We hypothesised that patients with lower lung zone-dominant sarcoidosis had lower baseline forced vital capacity, progressive restrictive lung function decline, and higher long-term mortality. We retrospectively reviewed clinical data including the pulmonary function tests of 108 consecutive patients with pulmonary sarcoidosis pathologically confirmed by lung and/or mediastinal lymph node biopsy from 2004 to 2014 from our database. Eleven patients (10.2%) with lower lung zone-dominant sarcoidosis were compared with 97 patients with nonlower lung zone-dominant sarcoidosis. The median age of the patients with lower dominance was significantly older (71 vs. 56, p = 0.0005). The patient with lower dominance had a significantly lower baseline percent forced vital capacity (FVC) (96.0% vs. 103%, p = 0.022). The annual change in FVC was -112 mL in those with lower dominance vs. 0 mL in nonlower dominance (p = 0.0033). Fatal acute deterioration was observed in three patients (27%) in the lower dominant group. Overall survival in the lower dominant group was significantly worse. Patients with lower lung zone-dominant sarcoidosis had an older age and lower baseline FVC with disease progression and acute deterioration associated with higher long-term mortality.

Sarcoidosis in Johannesburg, South Africa: A retrospective study.

Sarcoidosis is a multisystem granulomatous condition of uncertain aetiology that most frequently affects the lungs. Because of clinical and radiological similarities with tuberculosis (TB), particularly in high-prevalence regions, sarcoidosis is frequently misdiagnosed as TB. To review the clinical features of sarcoidosis patients in a South African (SA) population, adding clinical information to the relatively few studies that have been conducted in SA patients with sarcoidosis. This was a retrospective study of 102 sarcoidosis patients conducted between 2002 and 2006 at the Charlotte Maxeke Johannesburg Academic Hospital. Of 102 sarcoidosis patients, there were 69 (67.6%) females and 33 (32.4%) males. The majority (85.3%) were non-smokers. The mean age of the group was 44.6 years. One-third of patients had chronic comorbid diseases. Almost 17% had been treated initially for TB, prior to being diagnosed as having sarcoidosis. Two patients developed active TB while receiving corticosteroid treatment for sarcoidosis. The salient clinical manifestations were dry cough (the most common presenting symptom in 82.4%), dyspnoea in 53.9%, cutaneous lesions other than erythema nodosum in 33.3%, and on lung examination crackles were noted in 37.3% of patients. Raised angiotensin-converting enzyme (ACE) levels were found in 56.8% of patients. The majority (48%) of patients had stage II chest radiographic changes. Cutaneous (28.4%), mediastinal lymph node (25.5%) and transbronchial lung (25.5%) biopsies were the most frequent sites confirming granulomatous inflammation. Overall, 21.2% of patients had obstructive airway disease. Systemic corticosteroids were indicated in 87.3% of patients and the relapse rate was 60.7%. Sarcoidosis is often initially misdiagnosed as TB in SA. The most common biopsy sites for histological confirmation were the skin and mediastinal lymph nodes, and transbronchial lung biopsies were also frequently taken. Stage II chest radiographic changes were most common. Overall, systemic corticosteroids were administered in 87.3% of cases and the relapse rate was 60.7%.

Orbital sarcoidosis. Case report

AbstractPurpose: Sarcoidosis is an autoimmune granulomatous disease that can affect any organ system in the body. Orbital manifestations are relatively uncommon. We present the clinical features and management in a case report with orbital sarcoidosis.Methods: This case report study a 51 year‐old female patient being investigated for headache, blurred vision and diplopia of 7 days onset. She had proptosis of the left eye, diplopia and complete ophthalmoparesis on supraversion and abduction and partial on adduction. The magnetic resonance showed probable orbital inflammation (inflammatory pseudotumor)/Tolosa Hunt syndrome with predominant involvement of the left superior rectus muscle, cavernous sinus, and pachymeninges. Chest X‐ray showed no pathological findings and laboratory tests, thyroid profile, serology, IgG subclasses, angiotensin converting enzyme and autoantibodies were negative. The computed tomography (CT) showed pulmonary lesions compatible with stage III sarcoidosis. After the results of the imaging tests, it was decided to start treatment with a bolus of methylprednisolone for 5 days and then oral prednisone was started with clear clinical and radiological improvement. The mediastinal lymph node biopsy could not be performed due to the decrease in its size.Results: The patient was treated with decreasing doses of corticosteroids until the disappearance of the orbital and pulmonary radiological symptoms. It has been followed for 2 years without recurrence.Conclusions: The presentation of sarcoidosis simulating a pseudotumor is uncommon. Despite this, we must take it into account in the differential diagnosis. In our case, the presentation of CT showing a pulmonary lesion compatible with sarcoidosis and the improvement with corticoid treatment made us reinforce the suspicion of a diagnosis of sarcoidosis. In any case, the definitive diagnosis of this pathology is biopsy and pathological analysis.

AN ALTERNATE APPROACH: TRANSESOPHAGEAL BRONCHOSCOPIC ULTRASOUND-GUIDED FINE NEEDLE ASPIRATION (EUS-B-FNA) TO ASSESS PLEURAL MESOTHELIOMA

AN ALTERNATE APPROACH: TRANSESOPHAGEAL BRONCHOSCOPIC ULTRASOUND-GUIDED FINE NEEDLE ASPIRATION (EUS-B-FNA) TO ASSESS PLEURAL MESOTHELIOMA

UNILATERAL PTOSIS AS A FIRST MANIFESTATION OF SARCOIDOSIS

UNILATERAL PTOSIS AS A FIRST MANIFESTATION OF SARCOIDOSIS

IDIOPATHIC MULTICENTRIC CASTLEMAN DISEASE (IMCD) AS A MANIFESTATION OF POST-COVID-19 INFLAMMATORY SYNDROME

IDIOPATHIC MULTICENTRIC CASTLEMAN DISEASE (IMCD) AS A MANIFESTATION OF POST-COVID-19 INFLAMMATORY SYNDROME

CAUGHT IN THE FRAY: NEUROSARCOIDOSIS PRESENTING AS CHRONIC RESPIRATORY FAILURE

CAUGHT IN THE FRAY: NEUROSARCOIDOSIS PRESENTING AS CHRONIC RESPIRATORY FAILURE

S1961 Isolated Cardiac Metastasis as an Initial Presentation of Colorectal Cancer in a Young Male Due to Lymphatic Spread

Introduction: Malignant pericardial effusion is common, reported in 5–15% of cancer patients. It most commonly arises from metastasis of lymphomas and tumors of the lung, breast, and, infrequently, the gastrointestinal tract. We report a rare case of metastatic colon cancer without the direct involvement of other solid organs suggesting a lymphatic spread. Case Description/Methods: A 28-year-old man presented with one day of sudden onset of shortness of breath at rest. Vitals were significant for tachycardia. On examination, the lungs were clear to auscultation with distant heart sounds; the abdomen was soft without tenderness. The clinical presentation was suggestive of pericardial effusion. Laboratory studies revealed microcytic anemia with hemoglobin of 11.7 g/dl. CT angiography chest with contrast revealed moderate to large PEff and subsegmental pulmonary embolism. An ECHO showed large PEff, without any signs of tamponade. He underwent video-assisted thoracoscopic surgery for PEff with a pericardial window. The mediastinal lymph node biopsy and pericardial fluid cytology showed metastatic adenocarcinoma cells. A CT scan of the chest/abdomen/pelvis was performed to find the primary malignancy, which revealed a segmental thickening of the proximal ascending colon and ileum with proximal cecal distension, lymphadenopathy, without liver metastasis. A CF showed a large polypoidal mass in the ascending colon, and biopsy revealed poorly differentiated adenocarcinoma in ascending colon. He was started on palliative chemotherapy with capecitabine, oxaliplatin, and bevacizumab and was discharged with outpatient oncology follow-up (Figure). Discussion: Colorectal cancer (CRC) is the third most common cancer in the United States. It primarily spreads hematogenous via the portal venous system that drains the colon and proximal rectum to the liver and the lungs to the heart. However, cardiac metastasis is rare. In our patient, we assume lymphatic spread of colon cancer due to isolated pericardial involvement in the absence of solid organ involvement. To our knowledge, this is the second reported case of lymphatic spread of colon cancer. Therefore, we emphasize considering pericardial effusions as a marker of occult malignancy to facilitate rapid diagnosis and prompt treatment. However, the prognosis for carcinomatous pericarditis is poor, with a 2-5 months median survival.Figure 1.: A-Echocardiogram: Parasternal short axis view showing large pericardial effusion, no signs of cardiac tamponade. B-Colonoscopy showing a lobulated mass in cecum. C-Computed Tomography (C.T.) scan with PO/IV contrast showing mass vs segmental inflammation in proximal ascending colon (pink arrow). Mild thickening of terminal ileum (white arrow).

Multimodal linear endobronchial ultrasound guided mediastinal lymph node biopsy in the diagnosis of isolated mediastinal lymphadenopathy

Isolated mediastinal lymphadenopathy represents a common diagnostic dilemma whereby morphological analysis of tissue specimens are frequently needed to ascertain the diagnosis. Cryobiopsy by linear endobronchial ultrasound (EBUS) guidance had recently been described in literature. We described a multimodality biopsy approach of a case of isolated tuberculous mediastinal lymphadenitis in which we employed the 22-gauge transbronchial aspiration needle, mini-forceps and a flexible cryoprobe sequentially. We aim to highlight the novel technique of linear EBUS guided cryobiopsy in acquiring superior histological specimen from mediastinal lymphadenopathy for diagnosis purposes. We also compared the histopathological quality of the specimens acquired from these three different biopsy modalities.

Diagnosis distribution in cases with granulomatous inflammation in lung, pleura, and lymph node biopsies: an experience from a tertiary level single center chest diseases and thoracic surgery hospital.

Background:Granulomatous inflammation is found in a wide range of diseases, and most commonly associated with sarcoidosis and tuberculosis. Granulomas are pathologically classified into two main groups; necrotic and non-necrotic.Objectives:The aim of this study was to evaluate the radiological, laboratory, and pathological findings of a large patient population with granuloma in biopsy samples, to determine the final diagnostic distribution.Methods:This study was designed as a retrospective, descriptive, observational, cross-sectional study. It was conducted in patients with granulomatous inflammation detected in lung, pleural, mediastinal, hilar, and/or peripheral lymph node biopsies. Demographic information, radiological, microbiological, and laboratory results of the patients were obtained via the information processing system of the hospital. The diagnoses recorded were re-evaluated by at least two experienced clinicians and the final diagnosis distributions were made.Results:A total of 392 patients were included in the study. Non-necrotizing inflammation was detected in 268 patients, and necrotizing granulomatous inflammation was found in 124 patients. The most common cause of non-necrotizing inflammation was sarcoidosis, and tuberculosis in the case of necrotizing inflammation. A total of 77.2% of sarcoidosis patients had non-necrotizing inflammation and 54.3% of the tuberculosis patients had necrotizing inflammation. In the diagnosis distribution of granulomatous inflammation sarcoidosis, mycobacterium infections (especially tuberculosis), sarcoid reaction due to malignancy, pneumoconiosis, granulomatosis with polyangiitis and hypersensitivity pneumonitis were detected, respectively. A total of 392 patients were diagnosed with 13 different diseases. In 15 patients (3.8%) no specific diagnosis could be made.Conclusions:The diagnosis of granulomatous inflammation detected in biopsy samples is common for clinicians and a differential diagnosis is difficult in many cases. A patient’s clinical findings, laboratory results, and radiological appearance, should be evaluated in detail and a final diagnosis only made following a multidisciplinary discussion. The presence of necrosis in tissue samples alone is not a reliable finding for a final diagnosis.

TISSUE IS THE ISSUE: CASE OF PRIMARY PULMONARY PERIPHERAL T CELL LYMPHOMA

TOPIC: Lung Cancer TYPE: Medical Student/Resident Case Reports INTRODUCTION: Primary pulmonary lymphoma is a rare disease. It accounts for 0.5-1% of all pulmonary malignancy and less than 1 % of all Non-Hodgkins Lymphoma (NHL) (1). Mostly they are of B cell origin; however, there are fourteen reported primary pulmonary peripheral T Cell Lymphoma cases (2). We report a case of a patient presenting with primary pulmonary peripheral T cell Lymphoma. CASE PRESENTATION: A 58-year-old woman presented with complaints of dyspnea, high-grade fever, and cough for the past 4-5 days. Physical exam was unremarkable except for the fever, tachycardia, tachypnea, and oxygen saturation of 87% on room air. Laboratory workup was unremarkable except for elevated ESR, CRP, LDH, and ferritin. Rheumatological workup was unremarkable. Infectious workup, including COVID-19 PCR, blood cultures, and respiratory viral panel, were unremarkable. Chest CT showed bilateral consolidation of lungs with hilar and mediastinal lymphadenopathy (fig 1). She was started on broad-spectrum antibiotics and admitted to the medical floor. Her dyspnea got progressively worse, and she was intubated a week after her admission. Bronchoscopy was done with bronchoalveolar lavage and transbronchial biopsy; however, results were unremarkable. Video-assisted thoracoscopic surgery ( VATS ) was done for mediastinal lymph node biopsy, and biopsy results came positive for peripheral T cell lymphoma(Fig 2, 3 ). Bone marrow biopsy was unremarkable. The patient started to desaturate even on the maximal ventilator setting and was placed on venovenous extracorporeal membrane oxygenation (V-V ECMO). She was given the first cycle of Gemcitabine and oxaliplatin. However, she developed multiorgan failure. She was transitioned to comfort care and expired. DISCUSSION: Primary pulmonary peripheral T cell lymphoma usually manifests with the symptoms of dyspnea, cough, and fever. The mean age of presentation is fifty-three years. Radiographically it presents with lung consolidation, atelectasis, pleural effusion, and multiple nodular lesions. (3) Our patient had bilateral lung consolidation with hilar and mediastinal lymphadenopathy. Diagnosis is made by lobectomy, open lung biopsy, transthoracic needle biopsy, and mediastinal lymph node biopsy. (3) There is still no recommended standard treatment for primary pulmonary T cell lymphoma due to the scarcity of cases (4). Resection, radiotherapy, and chemotherapy are the treatment options used in patients suffering from this disease. CONCLUSIONS: Primary pulmonary peripheral T cell lymphoma is a rare and aggressive cancer. It presents with pneumonia-like symptoms. We recommend clinicians to consider bronchoscopy for those patients with pneumonia who do not get better with antibiotics. REFERENCE #1: Cadranel J, Wislez M, Antoine M. Primary pulmonary lymphoma. Eur Respir J. 2002;20(3):750-762. doi:10.1183/09031936.02.00404102 REFERENCE #2: Zhang S, Liang B, Jiang S. Primary pulmonary peripheral T-cell lymphoma: A case report and review of the literature. Thorac Cancer. 2014;5(1):104-107. doi:10.1111/1759-7714.12042 REFERENCE #3: Sangho Lee, Bongkyung Shin, Hyungseok Yoon, Jung Yeon Lee, Gyu Rak Chon, A case of primary pulmonary NK/T cell lymphoma presenting as pneumonia, Respiratory Medicine Case Reports, Volume17,2016, Pages 1-4, ISSN 2213-0071, https://doi.org/10.1016/j.rmcr.2015.11.003. 4) Bernabeu Mora R, Sánchez Nieto JM, Nieto Olivares A. Bilateral pulmonary nodules as a manifestation of primary pulmonary T-cell lymphoma. Int J Hematol. 2009;90(2):153-156. doi:10.1007/s12185-009-0372-8 DISCLOSURES: No relevant relationships by Neil Amin, source=Web Response No relevant relationships by Olufunmilayo Folaranmi, source=Web Response No relevant relationships by Junaid mir, source=Web Response No relevant relationships by Salmaan Mumtaz, source=Web Response No relevant relationships by Ateeb Ur Rahman, source=Web Response

First case of lung cancer with pneumoconiosis and endobronchial leiomyoma complicating the diagnosis

BackgroundIn the treatment of lung cancer, the presence or absence of mediastinal lymph node involvement has a significant bearing on the indication for surgery. In addition, if a tumor is found in the trachea during preoperative scrutiny of lung cancer, the possibility of intratracheal metastasis should be considered, since this kind of metastasis is a contraindication for surgery. In the present study, we experienced a case of lung cancer associated with pneumoconiosis and a rare intratracheal leiomyoma. In this case, preoperative staging was difficult, but endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) and intratracheal tumor biopsy were helpful in determining the treatment strategy.Case presentationA 65-year-old man was referred to our hospital for evaluation of abnormal chest X-ray shadows. Sputum cytology indicated squamous cell carcinoma. PET-CT scan showed fluorodeoxyglucose uptake in a right upper lobe mass and the hilar, mediastinal and right supraclavicular lymph nodes, and bronchoscopy revealed a protuberant lesion in the left bronchus. Hence, EBUS-TBNA for the mediastinal lymph nodes and simultaneous evaluation of the protuberant lesion in the left bronchus were performed. The bronchial tumor was histopathologically diagnosed as leiomyoma. Since mediastinal lymph node biopsy showed no malignant cells, a right upper lobectomy and a right S6 segmentectomy were performed. Postoperative pathological evaluation of the dissected lymph nodes revealed pneumoconiosis but no metastasis. He was, thus, diagnosed with squamous cell lung carcinoma (pT2bN0M0, pStage IIA).ConclusionsWe report a patient with lung cancer and coexistence of a rare endobronchial leiomyoma and pneumoconiosis, who underwent surgery after preoperative evaluation using EBUS-TBNA.

LMD-11. Pure spinal cord invasion in recurrent classic Hodgkin’s Lymphoma - what is it?

We present the case of a 39-year-old male who initially presented in January 2017 with abdominal pain and weight loss. He was eventually diagnosed with stage IVB Classical Hodgkin’s Lymphoma. Brentuximab, Vinblastine, and Dacarbazine regimen was initiated with dose adjustments made due to cardiomyopathy and neuropathy. By cycle 5, good response was evident on systemic imaging. He was then lost to follow-up.He represented in December 2020 with near paraplegia, preceded by months of tingling, numbness in both legs, gait imbalance and low back pain. MRI spine in January 2021 demonstrated multifocal abnormal cord signal changes with scattered areas of intramedullary cord enhancement as well as extensive enhancement of the cauda equina (Figures 1,2,3). CNS angiitis as a paraneoplastic phenomenon, mimics a similar clinical and radiographic appearance. Unfortunately none of the cord lesions were amenable to biopsy.Full body PET CT showed florid disease concerning for recurrence. 2 lumbar punctures with limited CSF flow cytometry and cytology analyses were negative. Mediastinal lymph node biopsy revealed Classical Hodgkins Lymphoma. DHAP chemotherapy regimen was initiated, soon after. A 3rd time, high volume comprehensive CSF analysis performed later, was unremarkable. MRI spine, after 2 cycles demonstrated significant improvement(Figures 4,5,6)coinciding with systemic response and clinical improvement. This favored diagnosis of CNS Hodgkin lymphoma over secondary CNS angiitis.CNS Hodgkin’s Lymphoma is a rare occurrence1, let alone, pure spinal intramedullary and leptomeningeal metastases. Intramedullary metastases arise from direct hematogenous spread or by, centripetal growth of tumor along spinal nerve roots with secondary invasion of spinal cord2. Systemic Hodgkin’s Lymphoma rarely affects the spine with a prevalence of 0.2% - 0.5%3,4. In an analysis of a large cohort of Hodgkin’s patients comprising 14,868 individuals, a prevalence of less than 0.02%, indicating it had been overestimated in the past5.