Confusion and Hallucination: A Case Report of an Unusual Presentation of COVID-19 by Rawabi Aljumaiah, Wael Alturaiki, Bandar Alosaimi

“…In this report, a case of COVID-19 is described with an unusual presentation of confusion and hallucinations in the absence of severe upper respiratory or constitutional symptoms. …”
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An Unusual Case of Anti-GBM Antibody Elevation in HIV-Associated Nephropathy by Vinay Minocha, Raafat Makary, Andreea Poenariu

“…The most commonly seen glomerular disease in HIV infected patients is HIV-associated nephropathy (HIVAN); however, a multitude of other nephropathies can occur in HIV infection with an almost equal cumulative frequency. We report an unusual case of a patient with clinical and histological evidence of HIVAN in which the diagnosis was initially confounded by the finding of an elevated serum anti-glomerular basement membrane (anti-GBM) antibody. …”
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An Unusual Presentation of Kawasaki Disease: Gallbladder Hydrops and Acute Cholestatic Hepatitis by B. O. Kılıç, Ş. Baysun, T. C. Gökşen, İ. Akınbingöl, Z. Arslan

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Unusual Case of Extraction of Maxillary Lateral Incisors and Mandibular Central Incisors by Rosa-María Yañez-Vico, Maria Cadenas de Llano-Perula, Enrique Solano-Reina

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An Unusual Presentation of a Posterior Mediastinal Schwannoma Associated with Traumatic Hemothorax by Ruchi Amin, Brett H. Waibel

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Unusual syphilis manifestation: From breast implant rupture to systemic erythroderma by Vivien Moris, Eliott Laine, Sahal Khan, Leslie Ann See

“…This case report describes a rare and unusual manifestation of syphilis in a 55-year-old transgender female with a history of breast implant surgery. …”
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Acute Pancreatitis as a Possible Unusual Manifestation of COVID-19 in Children by Niloufar Bineshfar, Alireza Mirahmadi, Fereshteh Karbasian, Elham Pourbakhtyaran, Abdollah Karimi, Mehdi Sarafi

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Insight into unusual complex thermodynamical behaviour of citric acid and ethanolamine solution by Reshma Karunakaran, Rajagopal Shanmugasundaram

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An Unusual Clinical Presentation of Merkel Cell Carcinoma: A Case Report by Deba P. Sarma, Dawn E. Heagley, Julianne Chalupa, Meredith Cox, James M. Shehan

“…Most of these tumors are located in the dermis. An unusual clinical presentation of such a tumor in the subcutis, if not biopsied, may be easily mistaken as a benign lesion. …”
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An Unusual Cause of Acute Upper Gastrointestinal Bleeding: Acute Esophageal Necrosis by Nikhil R. Kalva, Madhusudhan R. Tokala, Sonu Dhillon, Watcoun-Nchinda Pisoh, Saqib Walayat, Vishwas Vanar, Srinivas R. Puli

“…Acute esophageal necrosis (AEN), also called “black esophagus,” is a condition characterized by circumferential necrosis of the esophagus with universal distal involvement and variable proximal extension with clear demarcation at the gastroesophageal junction. It is an unusual cause of upper gastrointestinal bleeding and is recognized with distinct and striking mucosal findings on endoscopy. …”
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Atypical Cutaneous Fibrous Histiocytoma: An Unusual and Misleading Variant of Fibrous Histiocytoma by Soumaya Ben Abdelkrim, Colondane Belajouza, Wafa Jomaa, Nadia Beizig, Zeineb Ben Said, Moncef Mokni, Rafia Nouira, Badreddine Sriha

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Do Unusually Cold Starburst Galaxies Exist? A Case Study by Dominik A. Riechers

“…We thus do not find evidence for the existence of unusually cold starburst galaxies in the early Universe that were missed by previous selection techniques.…”
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An Unusual Case of Streptococcus pyogenes Causing Ruptured Aortic Mycotic Aneurysm by Ali Someili, Anjali Shroff

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An Unusual Pediatric Case of Allen Key Penetrating Trauma in Maxillofacial Region by Feride Fatma Görgülü, Orhan Görgülü, Ayşe Selcan Koç, Fatma Yasemin Öksüzler

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An Unusual Presentation of Pseudothrombotic Microangiopathy in a Patient with Autoimmune Atrophic Gastritis by Alexandre Malek, Roy Nasnas

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Interstitial Mycosis Fungoides: An Unusual Mimic of Interstitial Granuloma Annulare Not to Miss by Neha Singh, Kiley K. Fagan, Douglas J. Grider

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Unusual Presentation of Gastric Perforation by Foreign Body: A Case Report by V. S. R. Rao, R. Sarkar, Richard Turner, K. R. Wedgwood

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Challenges in the Diagnosis and Treatment of Aneurysmal Bone Cyst in Patients with Unusual Features by Ziyad M. Mohaidat, Salah R. Al-gharaibeh, Osama N. Aljararhih, Murad T. Nusairat, Ali A. Al-omari

“…This study presented multiple unusual features of ABC including: unusual age, rare locations, and nondiagnostic radiological and histopathological findings. …”
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Inverted Yoga and Near Syncope: An Unusual Diagnosis of Right Ventricular Myxoma by Wadie David, Narmeen Rehman, Robby Singh, Shukri David

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Eyelash Trichomegaly: Unusual Feature Associated with Systemic Lupus Erythematosus Patient by Amjad M. AlWarawreh, Ahmad M. AlWarawreh, Bashar F. Jarrar, Asem H. Aldebei, Mahasen S. Ajarmeh, Fadi F. Ayyash, Manal A. Abu Al-Ghanam

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