Iatrogenic Cushing's Syndrome Following Intra-Articular Triamcinolone Injection in an HIV-Infected Patient on Cobicistat Presenting as a Pulmonary Embolism: Case Report and Literature Review.

BACKGROUND: Iatrogenic Cushing's syndrome (ICS) typically develops after long-term exposure to corticosteroids, but it can occur after a single dose in patients treated with cobicistat or ritonavir for HIV. We present a patient who developed ICS due to the interaction between cobicistat and triamcinolone, a review of the literature, and what to our knowledge is the first case of ICS presenting as a pulmonary embolism. CASE PRESENTATION: A 55-year old male with a past medical history of human immunodeficiency virus, undetectable for 15 years and currently on elvitegravir/cobicistat/emtricitabine/tenofovir alafenamide, received 2 intra-articular injections of triamcinolone one month apart for a Baker's cyst in his right knee. He used nasal fluticasone for 9 days in-between the injections. After his second knee injection, he developed easy bruising and friable skin. Over the coming months, he experienced weight gain and Cushingoid facies. Four months after the knee injections he developed a pulmonary embolism and deep vein thrombosis treated with warfarin. The Cushingoid facies prompted an evaluation and diagnosis of ICS along with hypothalamic pituitary adrenal axis suppression. CONCLUSION: This case demonstrates the need to monitor patients on pharmacological boosters with any exposure to corticosteroids, whether it be injected, inhaled, topical, oral or intravenous, as it can lead to profound adrenal suppression and ICS.

Small Bowel Gastrointestinal Stromal Tumor as a Gateway for Streptococcus anginosus Causing Multiple Liver Abscesses.

Gastrointestinal stromal tumors (GISTs) are the most common type of mesenchymal neoplasm of the gastrointestinal tract but consist of only 1% of all primary gastrointestinal neoplasms. Differentiated from other spindle cell tumors, GISTs are uniquely positive for CD117 expression which allows for molecular targeting therapy with imatinib mesylate (Gleevec). Clinical presentations are variable, ranging from asymptomatic to vague symptoms of abdominal pain, early satiety, abdominal distention or gastrointestinal bleeding. Very rarely, patients can present with tumor-bowel fistula and intra-abdominal abscesses. In this article, we discuss a rare presentation of a middle-aged male with multiple liver abscesses found to have a primary small bowel GIST. This patient received prompt intravenous antibiotics; however, hepatic abscesses can be easily misinterpreted as cystic hepatic metastases which can delay appropriate therapy. Streptococcus anginosus was found to be responsible for the formation of the liver abscesses visualized on computed tomography (CT) scan. Similar to Streptococcus bovis, knowledge in the literature is arising about the association between S. anginosus and gastrointestinal malignancies. This case highlights the importance of identifying concomitant primary GISTs with intra-hepatic abscesses, as these lesions can be easily misconstrued as liver metastases and consequently mismanaged. We herein emphasize that hepatic abscesses are a potential sequela of GISTs and should thus prompt further investigation for potential malignancies, if warranted, so that there is no delay in treatment of these gastrointestinal tumors.

A Unique Presentation of Spontaneous Compartment Syndrome due to Acquired Hemophilia A and Associated Malignancy: Case Report and Literature Review.

Hemophilia is a bleeding diathesis that is most commonly congenital and causes a tendency for significant bleeding during procedures and often manifests as hemarthrosis. However, more rarely, hemophilia can be acquired. Our paper focuses on acquired hemophilia A (AHA), which is caused by the development of an autoantibody (an inhibitor) to factor VIII. A 61-year-old man with a past medical history of type II diabetes mellitus, hypertension, hyperlipidemia, hypothyroidism, and obstructive sleep apnea presented to the emergency department with severe right lower extremity pain and swelling of 2-day duration. He was found to have compartment syndrome and underwent emergent fasciotomy of his right leg. After surgery he still had significant bleeding, despite transfusions and administration of fresh frozen plasma (FFP) by the surgical team. He was later diagnosed with AHA, but was not adequately responsive to factor VII, factor VIII, steroids nor rituxan and unfortunately had his right lower extremity amputated. He had a prolonged hospital course, which included Streptococcus bovis bacteremia and a code stroke for which head computed tomography (CT) showed probable metastasis. It was acknowledged he had probable metastatic colon cancer, which was not confirmed as the patient transitioned to hospice care. Rather than hemarthrosis, patients with AHA tend to have bleeding in soft tissue or the gastrointestinal tract. AHA can have underlying causes, such as malignancy. AHA associated with malignancy is associated with poorer outcomes and tends to improve with treatment of the underlying malignancy. Therefore, it is important to quickly identify these patients and screen them for underlying etiologies.