EP05 COVID-19 and the biliary tree: atypical manifestations of disease during the pandemic

Abstract Case report - Introduction COVID-19, the infectious disease caused by the novel coronavirus SARS-CoV-2, and first described in Wuhan, China in December 2019, has affected more than 19 million patients worldwide and resulted in more than 700,000 deaths at the time of writing1. Patients with rheumatic diseases and those receiving immunosuppressive treatment are felt to be at greater risk of complications from this illness, though registry and trial data should help refine our understanding of these risks. We hereby describe a case of COVID-19 complicating an unusual rheumatic illness, resulting in severe multi-system disease and premature death. Case report - Case description A 69 year-old male presented to rheumatology and haematology with symmetrical polyarthritis, thrombocytopenia (18 x 109/L), eosinophilia (25.4 x 109/L), raised C-reactive protein (CRP, 43 mg/L), positive rheumatoid factor (>200), antinuclear antibody (ANA) and anti-Ro. Bone marrow biopsy did not demonstrate evidence of haematological malignancy. Seropositive rheumatoid arthritis and connective tissue disease overlap were diagnosed, and treatment with Prednisolone 60mg daily was initiated. Despite rituximab and intravenous immunoglobulins, thrombocytopenia deteriorated on reducing corticosteroids, however the addition of mycophenolate mofetil (MMF) allowed gradual prednisolone tapering to 3mg daily. Hydroxychloroquine was briefly added but discontinued due to headaches. MMF was discontinued after he developed fungal pneumonia followed by jaundice. Liver biopsy was consistent with drug-induced cholestasis, attributed to co-amoxiclav, and his liver function tests (LFTs) improved on ursodeoxycholic acid. Following a further deterioration in thrombocytopenia, hyperferritinaemia and new onset erythema nodosum, he had a repeat bone marrow examination. This demonstrated large areas of fibrosis and granulomatous inflammation with a dense, pleomorphic T-cell infiltrate, but no haemophagocytosis. Haematologists felt this was reactive and prednisolone dose was increased to 10mg daily. Six months later he developed cholangitis. Magnetic resonance cholangiopancreatography (MRCP) demonstrated a tight 4cm stricture of the distal common bile duct (CBD) within the head of pancreas, which was diffusely swollen without any clear focal mass. Serum amylase was mildly elevated (316 units/L). Concurrent CT thorax, abdomen and pelvis demonstrated bilateral ground-glass changes within the lungs, and a SARS-CoV-2 nasopharyngeal PCR test was positive, though he had no respiratory symptoms or oxygen requirement at that stage. Sadly, four days after the CT scan and before a planned endoscopic retrograde cholangiopancreatography (ERCP) could be performed, he became markedly hypoxic with plain chest x-ray features suggestive of COVID-19 pneumonia. Despite medical management, including doubling of his prednisolone dose, he rapidly deteriorated and died. Case report - Discussion This case highlights an unusual presentation of COVID-19 in a patient with a complex background of inflammatory arthritis with immune-mediated thrombocytopenia. At the time of his final illness, these conditions were managed with steroid monotherapy. Based on the COVID-19 risk matrix recommended by the British Society for Rheumatology, he was not identified as a patient requiring shielding. Cholangitis was the major problem precipitating his final admission to hospital, and at the time of admission he had no respiratory symptoms. One week prior to this admission, his father-in-law had died of COVID-19 pneumonia, though they had not been in recent direct contact. Interstitial lung changes were incidentally noted on a CT performed to identify the cause of cholangitis, which prompted the nasopharyngeal PCR that detected SARS-CoV-2. This occurred prior to widespread routine testing of hospital inpatients for SARS-CoV-2 by PCR. Unfortunately he then rapidly developed COVID-19 pneumonia and died before the underlying cause of cholangitis could be definitively identified, though an MRCP demonstrated an obstructed CBD within a diffusely swollen pancreas, where a differential diagnosis of pancreatic malignancy or autoimmune pancreatitis was suggested by the reporting radiologist. There are emerging case reports of COVID-19 resulting in significant pancreatic injuryand a further recent laboratory analysis has suggested that ACE2 receptors, which are utilised by SARS-CoV-2 to gain entry to host cells, are highly expressed on cholangiocytes at a comparable level to type II alveolar cells. Whilst the ultimate cause of cholangitis will remain unknown in this patient, this case highlights the potential for atypical presentations and extra-pulmonary manifestations of COVID-19. Case report - Key learning points COVID-19 is a multi-system illness which can cause significant extra-pulmonary as well as pulmonary pathology, with emerging reports that the biliary tract and pancreas are frequently affected. Evidence to inform accurate prediction of which patients with rheumatic diseases are at highest risk of acquiring severe COVID-19 disease remains insufficient, with current shielding guidelines based on expert consensus. This case highlights the importance of widespread testing for COVID-19 in hospital patients, as not all patients carrying the SARS-CoV-2 virus will demonstrate classical respiratory features of the disease at the point of admission.

toms included recurrent digital ulcers, tight and tough skin at fingers and Raynaud's worse during winter months. Her examination confirmed peripheral cyanosis with multiple digital ulcers with superimposed infection, marked sclerodactyly and calcinosis. She was started on Vasodilator therapy including calcium channel blocker and PDE5 inhibitor due to severity of ulceration. Infection was managed with prolonged course of antimicrobial therapy. Her immunology showed positive anti nRNP/Sm. Anti-centromere and anti Scl 70 were negative. Her condition fit description of CREST (Calcinosis, RP, Oesophageal dysmotility, telangiectasia). Her management included weaning off Methotrexate and reductionin the dose of corticosteroids. In February 2019, Respiratory work up showed normal Chest radiograph, High resolution CT chest showing no significant abnormality and FEV1 82%, FVC 86%, and DLCO 77%. Her PASP was 25mmHg. Overall, her condition remained stable over the course of next year. Her medication included Cellcept, low dose prednisolone, hydroxychloroquine, and Sildenafil. More importantly, Digital ulcers have been well controlled with combined vasodilatortherapy. In April 2020, she developed SARS-CoV-2 with mild respiratory symptoms and was admitted to a different hospital. Fortunately, she responded well to ward based supportive and symptomatic treatment with no need for respiratory support. Subsequently, she has seen a different respiratory physician and had repeat imaging of chest which has led todilemma whether thegroundglassopacitiesinboth lungsis duetoscleroderma lung or COVID-19 related lung disease. She was given high dose prednisolone by the respiratory physician which has been reduced in rheumatology clinic. The new findings on chest imaging are sequelae of SARS-COV-2. Case report -Discussion: This case highlights few important points as below: Systemic sclerosis diagnosis was not made for many years even though she has had severe digital ulcers for a long time. She was being managed as Rheumatoid arthritis. Systemic sclerosis remains a difficult disease to diagnose and is still under recognised. SARS-COV-2 related illness has not affected this patient adversely despite the fact of being on long term maintenance prednisolone of 7.5mg daily dose and Cellcept 2gm. Her cellcept was temporarily stopped during acute illness. We know that viral pneumonitis can present with typical ground glass opacities in bilateral areas of lungs and differential diagnosis does include connective tissue related lung disease but this lady had no significant respiratory involvement prior to COVID-19 illness and follow up scan will help to decide if this is disease progression or related to viral cause. Case report -Key learning points: There are multiple learning points in this case: Continuity of care under same primary team can avoid confusion related to diagnosis and diagnosis related complications. This lady had none, or mild subclinical lung involvement related to systemic sclerosis prior to contracting COVID-19 illness. Her CT chest findings after the episode of SARS-COV-2 were attributed to systemic sclerosis as she was seen by different respiratory team. This continuity is not always possible, but MDT collaboration needs to be improved across hospitals and across various departments. Systemic sclerosis remains an under diagnosed and under recognized complex rheumatic disorder and more primary care physicians need to be educated so they can appropriately refer these cases to Rheumatology services. Multi-disciplinary collaboration between Rheumatology, Respiratory and other specialties is the key point to manage these complex cases. This case also highlights an interesting observation that presence of significant immune disorder and immunosuppressant medication does not always equate to worse outcome if patient contracts SARS-COV-2. Supportive care, appropriate observation, and temporary suspension of DMARD in such cases can avoid any further complications.

Great Western Hospital NHS Foundation Trust, Swindon, United Kingdom
Case report -Introduction: COVID-19, the infectious disease caused by the novel coronavirus SARS-CoV-2, and first described in Wuhan, China in December 2019, has affected more than 19 million patients worldwide and resulted in more than 700,000 deaths at the time of writing 1 . Patients with rheumatic diseases and those receiving immunosuppressive treatment are felt to be at greater risk of complications from this illness, though registry and trial data should help refine our understanding of these risks. We hereby describe a case of COVID-19 complicating an unusual rheumatic illness, resulting in severe multi-system disease and premature death. Case report -Case description: A 69 year-old male presented to rheumatology and haematology with symmetrical polyarthritis, thrombocytopenia (18 x 10 9 /L), eosinophilia (25.4 x 10 9 /L), raised C-reactive protein (CRP, 43 mg/L), positive rheumatoid factor (>200), antinuclear antibody (ANA) and anti-Ro. Bone marrow biopsy did not demonstrate evidence of haematological malignancy. Seropositive rheumatoid arthritis and connective tissue disease overlap were diagnosed, and treatment with Prednisolone 60mg daily was initiated. Despite rituximab and intravenous immunoglobulins, thrombocytopenia deteriorated on reducing corticosteroids, however the addition of mycophenolate mofetil (MMF) allowed gradual prednisolone tapering to 3mg daily. Hydroxychloroquine was briefly added but discontinued due to headaches. MMF was discontinued after he developed fungal pneumonia followed by jaundice. Liver biopsy was consistent with druginduced cholestasis, attributed to co-amoxiclav, and his liver function tests (LFTs) improved on ursodeoxycholic acid. Following a further deterioration in thrombocytopenia, hyperferritinaemia and new onset erythema nodosum, he had a repeat bone marrow examination. This demonstrated large areas of fibrosis and granulomatous inflammation with a dense, pleomorphic T-cell infiltrate, but no haemophagocytosis.
Haematologists felt this was reactive and prednisolone dose was increasedto 10mg daily. Six months later he developed cholangitis. Magnetic resonance cholangiopancreatography (MRCP) demonstrated a tight 4cm stricture of the distal common bileduct(CBD)within the headof pancreas,whichwas diffusely swollen without any clear focal mass. Serum amylase was mildly elevated (316 units/L). Concurrent CT thorax, abdomen and pelvis demonstrated bilateral ground-glass changes within the lungs, and a SARS-CoV-2 nasopharyngeal PCR test was positive, though he had no respiratory symptoms or oxygen requirementat that stage. Sadly, fourdays after the CT scan and before aplanned endoscopicretrograde cholangiopancreatography (ERCP) could be performed, he became markedly hypoxic with plain chest x-ray features suggestive of COVID-19 pneumonia. Despite medical management, including doubling of his prednisolone dose, herapidly deteriorated and died.
Case report -Discussion: This case highlights an unusual presentation of COVID-19 in a patient with a complex background of inflammatory arthritis with immune-mediated thrombocytopenia. At the time of his final illness, these conditions were managed with steroid monotherapy. Based on the COVID-19 risk matrix recommended by the British Society for Rheumatology,he was not identifiedas apatient requiringshielding. Cholangitis was the major problem precipitating his final admission to hospital, and at the time of admission he had no respiratory symptoms. One week prior to this admission, his father-in-law had died of COVID-19 pneumonia, though they had not been in recent direct contact. Interstitial lung changes were incidentally noted on a CT performed to identify the cause of cholangitis, which prompted the nasopharyngeal PCR that detected SARS-CoV-2. This occurred prior to widespread routine testing of hospital inpatients for SARS-CoV-2 by PCR. Unfortunately he then rapidly developed COVID-19 pneumonia and died before the underlying cause of cholangitis could be definitively identified, though an MRCP demonstrated an obstructed CBD within a diffusely swollen pancreas, where a differential diagnosis of pancreatic malignancy or autoimmune pancreatitis was suggested by the reporting radiologist.
There are emerging case reports of COVID-19 resulting in significant pancreatic injury and a further recent laboratory analysis has suggested that ACE2 receptors, which are utilised by SARS-CoV-2 to gain entry to host cells, are highly expressed on cholangiocytes at a comparable level to type II alveolar cells. Whilst the ultimate cause of cholangitis will remain unknown in this patient, this case highlights the potential for atypical presentationsand extra-pulmonary manifestationsof COVID-19.

Case report -Key learningpoints
COVID-19 is a multi-system illness which can cause significant extrapulmonary as well as pulmonary pathology, with emerging reports that the biliary tract and pancreas are frequently affected. Evidence to inform accurate prediction of which patients with rheumatic diseases are at highest risk of acquiring severe COVID-19 disease remains insufficient, with current shielding guidelines based on expert consensus. This case highlights the importance of widespread testing for COVID-19 in hospital patients, as not all patients carrying the SARS-CoV-2 virus will demonstrate classical respiratory features of the disease at the point of admission.

Royal Berkshire Hospital, Reading, United Kingdom
Case report -Introduction: Coronavirus (SARS-COV-19) typically targets the respiratory tract; however extra-respiratory manifestations such as myositisand myopericarditis may be the only presenting feature. We present a patient with myopericarditis who developed sudden onset muscle weakness. CT thorax showed typical appearance of COVID-19 with anabsence ofrespiratorysymptoms. MRIofboth thighs revealed diffuse symmetrical myositis. Her clinical and paraclinical abnormalities improved with the aid of steroids. We present our approach to the case and highlight that clinicians should consider myositis as another COVID-19 manifestation when reviewing the differentials. Case report -Case description: A 50-year-old female, non-smoker, presented with few days history of central chest pain radiating to her back. This was exacerbated by lying down and inspiration. Associated with mild shortness of breath on exertion. She denied upper respiratory tract symptoms. Her past medical history included hypertension and myopericarditis in 2012 and 2013 requiring pericardiocentesis. In 2017 she presented with post-streptococcal erythemanodosum and reactive arthritisin left ankle. On auscultation her heart sounds were normal, and chest was clear. Initial investigations revealed a mild lymphopenia 0.63, a C-reactive protein of 11mg/L,and a raised troponin 77 and 103 on repeat. D-dimer, Chest x-ray were normal. ECHO showed trivial anterior pericardial effusion, good biventricular function. Treatment included colchicine 500 micrograms four times a dayand Ibuprofen 400 mg three timesaday. On her second day of admission she developed hypotensive episodes BP 75/49 mm/Hg and mild pyrexia of 37.5 degrees. Her chest pain continued. Electrocardiogram was normal, repeat echocardiogram showed stable 1.40 cm pericardial effusion. CT thorax revealed no dissection or features suggesting pulmonary sarcoidosis but ground-glass opacity changes in keeping with COVID-19. Her COVID-19 swab test came back positive.
On the 4th day of admission, she complained of sudden onset of severe pain affecting her thighs, shoulders, and arms, with marked proximal lower limbs and truncal weakness. Because of this, she struggled to mobilise. There was a rapid rise in her creatine kinase from 6.423U/L (day 5) to 32.230 U/L (day 7). ALT increased to 136. MRI showed diffuse myositis with symmetrical appearances involving the anterior, medial, and posterior muscle compartments of both thighs. In view of her previous and current presentation, autoimmune screen and extended myositis immunoblot were sent and were negative. Interestingly, her clinical and paraclinical abnormalities improved dramatically after few dayswith no steroids initially.
Case report -Discussion: The identification of extra-pulmonary manifestations neurological, cardiac, and muscular have recently increased as the number of COVID-19cases grow. This case highlights cardiac and skeletal muscle involvement could perhaps representearly or only manifestation of COVID-19. Cardiac involvement in COVID-19 commonly manifests as acute cardiac injury (8-12%), arrhythmia (8.9-16.7%) and myocarditis. In our case the cardiac MRI demonstrated evidence of myocarditis in the basal inferoseptum and apex. Myalgia and muscle weakness are among the symptoms described by patients affected by . Some studies report the prevalence of myalgia to be between 11%-50%. The onset of symptoms and the fact that her symptoms improved rapidly led us to consider a viral myositis as the underlying cause, the viral component being COVID-19. We also considered other potential causes. There are reported cases of colchicine myopathy however this is more common in patients with renal impairment, which was absent inthis case. On further examination she did not have other clinical signs or symptoms of connective tissue disease or extra muscular manifestation of autoimmune myositis. Her abnormal ALT may be derived from damaged muscle, and therefore in this context is not necessarily a specific indicator of liver disease. Interestingly abnormal liver function tests have been attributed in 16 -53% of  Little is known about the multiple biologic characteristics of COVID-19 and there are no established clinic serological criteria for COVID-19 related myositis nor useful values/cut offs to exclude cardiac involvement in myositis, further research is therefore warranted.
In conclusion, clinicians should be aware of the rare manifestation of COVID-19 and consider this in the differentials. Of course, it is important in the first instant to rule out any serious underlying disease or overlap disorder before attributing symptoms to COVID-19.

Case report -Key learningpoints
Myositis is a rare manifestation of COVID-19 that clinicians should be aware of. Detailed medical history, examination and investigations identifies the most likely underlying cause. In the right clinical context, COVID-19 -19 testing should be included in baseline tests of patients presenting with myositis.

Furness General Hospital, Barrow, United Kingdom
Case report -Introduction: COVID-19 pandemic affected medical practise significantly and caused difficulties in accessing necessary investigations at the appropriate time. As of March 2020, NHS England issued measuresto redirect staffs and resources inpreparationfor the rising cases of coronavirus. As a result of this, non-urgent tests/treatments were put on hold. We present a new case of EGPA admitted to our district general hospital during the COVID-19 pandemic to highlight the challenges faced. The diagnosis was reached based on clinical judgment in the absence of some confirmatory tests as well as the decision of starting immunosuppressant treatment during the pandemic. Case report -Case description: A 41-years-old lady with a background of well-controlled asthma, presented with five days history of paraesthesia and swelling in both legs. She also reported mild pleuritic chest pain, which radiated to her left arm. Physical examination revealed left foot drop. She had reduced sensation on the L5-S1 dermatomal distribution with absent ankle reflex and reduced knee reflex of her left leg. Her left calf was swollen and tender. The rest of her examination was unremarkable. Baseline blood revealed raised WCC of 19.3 with significant eosinophilia (10). CRPandESRwere135 mg/Land48mm/hr,respectively.Electrocardiogram showed new T-wave inversion in the anterolateral leads with significantly raised troponin levels. There was ground glass appearance in both lungs, keeping with suspected COVID-19 and no evidence of pulmonary embolus was foundonCTPA. MRIspine confirmed noevidence ofcaudaequina compression.DeepveinthrombosiswasalsoexcludedwithUSdoppler. She was treated as myocarditis and pneumonia secondary to probable COVID-19 infection. Echocardiogram revealed severe LVSD (EF < 35%)