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Background Literature indicates an atypical presentation of COVID-19 among older adults (OAs). Our purpose is to identify the frequency of atypical presentation and compare demographic and clinical factors, and short-term outcomes, between typical versus atypical presentations in OAs hospitalized with COVID-19 during the first surge of the pandemic. Methods Data from the inpatient electronic health record were extracted for patients aged 65 and older, admitted to our health systems’ hospitals with COVID-19 between March 1 and April 20, 2020. Presentation as reported by the OA or his/her representative is documented by the admitting professional and includes both symptoms and signs. Natural language processing was used to code the presence/absence of each symptom or sign. Typical presentation was defined as words indicating fever, cough, or shortness of breath; atypical presentation was defined as words indicating functional decline or altered mental status. Results Of 4 961 unique OAs, atypical presentation characterized by functional decline or altered mental status was present in 24.9% and 11.3%, respectively. Atypical presentation was associated with older age, female gender, Black race, non-Hispanic ethnicity, higher comorbidity index, and the presence of dementia and diabetes mellitus. Those who presented typically were 1.39 times more likely than those who presented atypically to receive intensive care unit–level care. Hospital outcomes of mortality, length of stay, and 30-day readmission were similar between OAs with typical versus atypical presentations. Conclusion Although atypical presentation in OAs is not associated with the same need for acute intervention as respiratory distress, it must not be dismissed.

Ophthalmoplegia is a paralysis or weakness of extraocular muscles that have a variety of different etiologies including and not limited to Leptomeningeal Carcinomatosis (LC). LC is caused mainly by metastatic cancers and can cause a wide variety of symptoms. We present a case of LC with no preexisting condition who presented with a unilateral ophthalmoplegia as initial presentation who was found to have LC secondary to large B-cell lymphoma.

Neurofibromatosis Type 1 (NF1) is an autosomal dominant genetic disorder with an incidence of approximately 1 in 4,000 live births [1]. Pulmonary arterial hypertension (PAH) is a rare but extremely life-threatening complication associated with NF1. Timely recognition of this unusual and severe association between NF1 and PAH is imperative in prolonging the survival in this specific patient population. We present the clinical outcomes of a 47-year old female previously diagnosed with NF1, who presented with progressively worsening dyspnea. Keywords: NF1, PAH, PH

Background Nocardia species are thin, aerobic, filamentous, gram-positive bacilli that are ubiquitous in soil worldwide. Nocardia infections are divided into three main categories: pulmonary nocardiosis, disseminated nocardiosis, and cutaneous nocardiosis. Methods We present a case of cerebral nocardiosis in an immunocompetent patient caused by Nocardia beijingensis (NB). Results A 60-year-old Caucasian lady from Florida with type 2 diabetes mellitus, hypertension, hyperlipidemia, presented to the emergency room with complaints of altered mentation. Per husband, she was having episodes of emesis and diarrhea 3 days prior to admission that resolved however, her mentation significantly deteriorated to where she was unable to perform simple chores around the house. Pertinently she had resection of lung mass 2 months prior to admission which found to be benign. Vital sign at admission was stable and on examination, the patient was alert and oriented, however, lethargic appearing. Neurological examination was pertinent for expressive aphasia; however, cranial nerves II-XII were grossly intact. The patient was also found to have a 3 cm by 4 cm, tender, cystic lesion on the left-sided occipital scalp. The remainder of the physical examination was unremarkable. Admission laboratories were remarkable for leukocytosis and hyperglycemia. MRI of the brain was completed that showed multiple areas of vasogenic edema and multiple nodules with the largest being 1.8 cm suggestive of abscesses. She was started empirically on vancomycin, ceftriaxone, metronidazole, and ampicillin. Cerebral spinal fluid showed neutrophilic pleocytosis, low glucose, and high protein. Initial cultures including CSF were negative. Left-sided occipital scalp lesion was excised and sent for pathology and culture. Initial cultures showed gram-positive bacilli, so antibiotics were de-escalated to sulfamethoxazole/trimethoprim and ceftriaxone. Repeat imaging showed improving abscess, and final cultures resulted in NB. Conclusion NB is believed to have originated in Southeast Asia. NB has been associated mainly with infections in immunocompromised. In the United States, the two only other cases of NB described in immunocompetent hosts were interestingly from Florida as well. Disclosures All authors: No reported disclosures.