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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Pressure-induced Lipodystrophy from Elbow Compression

Winter, Randi P., Bibb, Lorin, Leicht, Stuart S., Dr. 12 April 2019 (has links)
Lipodystrophic syndromes encompass a wide range of both inherited and acquired conditions whereby adipose tissue is lost or absent. We report a rare case of acquired localized, pressure-induced lipodystrophy whereby continuous elbow pressure to the distal thighs led to marked tissue disfigurement. Pressure-induced lipodystrophy is a condition that likely results from protracted, localized pressure which ultimately decreases blood flow to the surrounding tissues. Overtime, the decreased perfusion is thought to induce adipocyte degeneration and eventual tissue deformation. Our findings resemble those described in the case reports of leg crossers’ dimples and lipoatrophia semicircularis and support current literature suggesting that prolonged pressure can indeed lead to significant adipose tissue loss and local architectural distortion. Our findings are significant because pressure-induced lipodystrophy represents an avoidable condition that can be circumvented if patients and physicians are knowledgeable of the underlying causes. We highlight a rare case report to educate the public as well as physicians about the causes of pressure-induced lipodystrophy and ultimately prevent future cases of unnecessary and unintended disfigurement.
2

Absence of Infrarenal inferior vena cava Leading to Deep Venous Thrombosis and Incidental Finding of Nutcracker Syndrome

Hussain, Raza, Mansurov, Alay, Chakraborty, Kanishka, Vasileva, Alisa 24 April 2020 (has links)
Introduction: Inferior vena cava (IVC) malformations are extremely rare. Their impact with additional risk factors has not been well studied. Here, we present a case of a young female with absent IVC. She presented with an extensive left lower extremity (LLE) deep venous thrombosis (DVT) after starting oral contraceptives. Case: A 21-year-old female with no past medical history presented with progressively worsening back pain and LLE edema. Her only medication was combined oral contraceptive (OCP) which was started 4 months ago. Physical exam was significant for blue discoloration of her LLE extending from foot to thigh. The ultrasound showed multiple thrombi within the left common and deep femoral veins, left popliteal vein and left peroneal vein. The abdominal computerized tomography revealed the absence of an infrarenal IVC with collateral azygous, hemiazygous and prominent left gonadal veins. Occlusion by the thrombi extended from the left femoral vein to the left iliac vein. Some extension was noted into the right common iliac vein. She was treated with a catheter directed tissue plasminogen activator (tPA) infusion into the left iliac vein followed by continuous heparin infusion. Hypercoagulable testing was negative. While on heparin, she developed asymptomatic gross hematuria. CT urogram showed a significant dilation of the left gonadal vein, a large vein along the left psoas muscle draining into the left renal vein, and a mild enlargement of right gonadal vein. The urine analysis was negative for bacterial infection; but it contained a numerous amount of red blood cells and protein. Once the hematuria had resolved, she was discharged on apixaban. Her OCP was discontinued. Discussion: There have been several case reports describing IVC abnormalities associated with DVT. In our case, DVT was likely provoked by usage of OCP. Current guidelines would require provoked DVTs to be treat for at least 3-12 months with anticoagulation therapy. Case reports of IVC malformations illustrated that these patients are at high risk for DVT at baseline. Hence the underlying abnormality still poses a lifetime risk. Also, with abnormal venous vasculature, gross hematuria, proteinuria and the lack of other causes, we suspect underlying Nutcracker syndrome (NS). Her pelvic abdominal pain can also be attributed to pelvic congestion syndrome, which is commonly associated with NS. Conclusion: There are several questions that arise from this case including: selecting a type of contraceptive method; safety of direct thrombin inhibitors in patients with NS; indefinite direct thrombin inhibitors in young patients. Unfortunately, due to the rarity of this condition, no set guidelines are available on how to manage these individuals.
3

Asymptomatic Free Air: An Abnormal Presentation of Pneumatosis

Carey, Andrew J, Garner, Joseph, Guarderas, Mateo, MD, Vance, John, DO, Floresguerra, Carlos, MD 12 April 2019 (has links)
Pneumatosis intestinalis, air within the bowel wall, continues to have an elusive etiology due to its varied clinical presentation and associated disease processes. Pneumatosis may be an incidental finding on a routine CT Scan or it could present as peritonitis with intra-abdominal free air. The pathogenesis, therefore, is likely to be multifactorial rather than directly related to one particular, inciting pathology. Here we present a case of a 73-year-old male scheduled for a non-emergent incisional hernia repair who was found to have peritoneal free air without physical exam findings of peritonitis. This unusual case illustrates a rare presentation of small bowel, omental, and abdominal wall pneumatosis. The objective of this presentation is to broaden the clinician’s understanding of pneumatosis intestinalis, including a recommendation to discern the underlying illness as emergent or benign. Finally, we make the case for clinical intuition and the physical exam.

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