Andrew L Waack

Mr. Andrew L Waack

orcid

Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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18 October 2022 in Radiology Case Reports
Verified
Journal Article
Open access
AWAndrew L Waack
Andrew L Waack
SNSwamroop Nandwani
Swamroop Nandwani
KKKarthik Kolisetty
Karthik Kolisetty
VVVenkatramana Vattipally
Venkatramana Vattipally
Intussusception has been considered a rare phenomenon in adults, with most cases occurring secondary to lead points. Most adult cases of intussusception occur secondary to lead points. Lead point intussusceptions typically require surgical intervention, whereas non-lead point intussusceptions are often transient and resolve without surgery. Therefore, accurate identification of the etiology of the intussusception guides subsequent treatment. Lipomas are an uncommon type of lead point. We present a case of intussusception secondary to a lipomatous lead point and describe the radiological diagnosis and surgical management.

26 August 2023 in Radiology Case Reports
Verified
Journal Article
Open access
AWAndrew L Waack
Andrew L Waack
SNSwamroop Nandwani
Swamroop Nandwani
MRMeghana Ranabothu
Meghana Ranabothu
ARAkash Ranabothu
Akash Ranabothu
VVVenkatramana Vattipally
Venkatramana Vattipally
Marchiafava-Bignami disease (MBD) is a rare vitamin B deficiency classically associated with alcoholism. MBD damages the corpus callosum and presents with nonspecific neurological symptoms. Radiological imaging is critical for diagnosing MBD and commencing subsequent treatment, which often consists of vitamin B supplementation. We present a case of MBD in a 56-year-old male with alcohol use disorder, epilepsy, schizophrenia, post-traumatic stress disorder, and cardiovascular risk factors. The patient presented with general neurological symptoms, and there were several potential diagnoses to consider based on the patient's history. Radiological imaging was necessary for diagnosis. This case demonstrates the role radiological imaging plays in the workup of MBD.

15 September 2022 in Radiology Case Reports
Verified
Journal Article
Open access
AWAndrew L Waack
Andrew L Waack
SJSarah Jaggernauth
Sarah Jaggernauth
SSShikha Sharma
Shikha Sharma
Venous stent migration to the heart is considered to be a rare complication of a common procedure. Therefore, many physicians do not include this complication in their differential diagnosis. We explain why this complication is likely more common than currently thought and why it should be considered as a potential diagnosis. This case describes migration of bilateral iliac vein stents into the right ventricular outflow tract and right interlobar pulmonary artery. We provide multiple imaging modalities demonstrating the migrated stents. We believe radiologists should be cognizant of this complication and consider it as a potential diagnosis. Hopefully, this will create a greater awareness of this life-threatening complication of venous stent placement.

29 November 2022 in Radiology Case Reports
Verified
Journal Article
Open access
AWAndrew L Waack
Andrew L Waack
MRMeghana Ranabothu
Meghana Ranabothu
VVVenkatramana Vattipally
Venkatramana Vattipally
Artisanal and small-scale gold mining uses mercury to isolate gold from ore. Although uncommon in the United States, it is more common in poor and undeveloped countries. This practice requires heating mercury, which vaporizes into an odorless gas that can be inspired and absorbed into the blood. Inspired mercury vapors place individuals at risk of acute mercury toxicity and its subsequent chronic sequelae. We report a case of incidentally detected mercury foreign bodies in a 56-year-old male with a prior history of accidental mercury poisoning due to prior contact with artisanal gold mining equipment.

28 November 2022 in Radiology Case Reports
Verified
Journal Article
Open access
AWAndrew L Waack
Andrew L Waack
JNJordan Norris
Jordan Norris
KBKathryn Becker
Kathryn Becker
AHAlastair Hoyt
Alastair Hoyt
JSJason Schroeder
Jason Schroeder
Labrune syndrome is an extremely rare disorder characterized by a radiological triad of leukoencephalopathy, cerebral calcifications, and cysts. The condition is the result of an autosomal mutation in the SNORD118 gene, a non-protein encoding gene that mediates rRNA synthesis. The mutation results selectively in cerebral microangiopathy through an unknown mechanism. Radiological imaging is central to diagnosing the condition, but, because the condition is so rare, there is no standard treatment paradigm. We describe the longitudinal progression of a case of Labrune syndrome, including the radiological diagnosis and imaging and surgical management.

9 March 2023 in Radiology Case Reports
Verified
Journal Article
Open access
AWAndrew L Waack
Andrew L Waack
ARAkash Ranabothu
Akash Ranabothu
APAvish Persaud
Avish Persaud
MRMeghana Ranabothu
Meghana Ranabothu
VVVenkatramana Vattipally
Venkatramana Vattipally
Inferior mesenteric vein thrombophlebitis is an uncommon condition. Most cases of portal-mesenteric thrombophlebitis affect either the portal vein or superior mesenteric vein; it is not known why the inferior mesenteric vein is less affected. Thrombophlebitis typically occurs following inflammatory intra-abdominal processes, such as diverticulitis. Diverticulitis is a common condition in the Western world, with several common complications, such as fistula formation and bowel wall perforation. However, although diverticulitis is a common cause of portal-mesenteric thrombophlebitis, thrombophlebitis is still a rare complication of diverticulitis. We present a case of diverticulitis complicated with interior mesenteric vein thrombophlebitis with gas extension into the portal vein.