keyword
MENU ▼
Read by QxMD icon Read
search

pitfall diagnosis

keyword
https://www.readbyqxmd.com/read/28212054/machine-learning-for-medical-imaging
#1
Bradley J Erickson, Panagiotis Korfiatis, Zeynettin Akkus, Timothy L Kline
Machine learning is a technique for recognizing patterns that can be applied to medical images. Although it is a powerful tool that can help in rendering medical diagnoses, it can be misapplied. Machine learning typically begins with the machine learning algorithm system computing the image features that are believed to be of importance in making the prediction or diagnosis of interest. The machine learning algorithm system then identifies the best combination of these image features for classifying the image or computing some metric for the given image region...
February 17, 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28210839/thrombotic-microangiopathy-caused-by-methionine-synthase-deficiency-diagnosis-and-treatment-pitfalls
#2
Maria Helena Vaisbich, Andressa Braga, Maria Gabrielle, Clarissa Bueno, Flávia Piazzon, Fernando Kok
BACKGROUND: Inborn errors of cobalamin (Cbl) metabolism form a large group of rare diseases. One of these, Cbl deficiency type C (CblC), is a well-known cause of thrombotic microangiopathy (TMA), especially in infants. However, there has only been a single published case of TMA associated to Cbl deficiency type G (CblG), also known as methionine synthase deficiency (MSD). CASE DIAGNOSIS/TREATMENT: A 21-month-old boy presented with pallor and oral ulcers during episodes of upper respiratory infection (URI)...
February 16, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28209557/formative-evaluation-of-participant-experience-with-mobile-econsent-in-the-app-mediated-parkinson-mpower-study-a-mixed-methods-study
#3
Megan Doerr, Amy Maguire Truong, Brian M Bot, John Wilbanks, Christine Suver, Lara M Mangravite
BACKGROUND: To fully capitalize on the promise of mobile technology to enable scalable, participant-centered research, we must develop companion self-administered electronic informed consent (eConsent) processes. As we do so, we have an ethical obligation to ensure that core tenants of informed consent-informedness, comprehension, and voluntariness-are upheld. Furthermore, we should be wary of recapitulating the pitfalls of "traditional" informed consent processes. OBJECTIVE: Our objective was to describe the essential qualities of participant experience, including delineation of common and novel themes relating to informed consent, with a self-administered, smartphone-based eConsent process...
February 16, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/28205367/multiplex-ligation-dependent-probe-amplification-as-first-mutation-screening-for-large-deletions-and-duplications-in-haemophilia
#4
D Belvini, R Salviato, P Radossi, G Tagariello
INTRODUCTION: Molecular characterization has shown a wide mutational spectrum underlying haemophilia A (HA) and haemophilia B (HB). Different molecular assays have allowed laboratories to perform genetic testing for F8 and F9 mutations. AIM: Recently, multiplex ligation-dependent probe amplification (MLPA), a simple technique for relative quantitation of targeted genomic regions, has been introduced in HA and HB for detection of large deletions and duplications...
February 15, 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/28203325/inherited-thrombocytopenia-with-a-different-type-of-gene-mutation-a-brief-literature-review-and-two-case-studies
#5
Mohammad Taghi Arzanian
Hereditary thrombocytopenias are rare bleeding disorders, which cause a deficiency of platelets in early infancy. This group of disorders is sometimes associated with abnormal phenotypes, like absence of radius. Diagnosis of this type of thrombocytopenia is usually difficult; other causes of thrombocytopenia, such as immune disorders and infections, must be ruled out. The symptoms of hereditary thrombocytopenia also vary from seldom and mild to severe bleeding and occasionally may first occur in late childhood...
October 2016: Iranian Journal of Pediatrics
https://www.readbyqxmd.com/read/28202820/-clinical-manifestations-of-spinal-epidural-hematoma-stroke-mimic-and-pitfalls-in-diagnosis
#6
Masaru Kuriyama
Clinical manifestations of spinal epidural hematoma are presented, and the cases mimicking acute ischemic stroke have been reviewed from the literature. Many reports described the cases of spinal epidural hematoma with acute hemiparesis mimicking ischemic stroke in which intravenous thrombolytic treatment with recombinant tissue plasminogen activator was considered. A correct diagnosis of acute ischemic stroke must be made within 4.5 hours from the onset of symptoms, a relatively short window period. A spinal epidural hematoma is a potentially important stroke mimic in a wide variety of conditions that mimic a stroke...
February 2017: Brain and Nerve, Shinkei Kenkyū No Shinpo
https://www.readbyqxmd.com/read/28197925/giant-prolactinoma-presenting-as-a-base-of-skull-tumor-with-nasopharyngeal-extension-a-potential-diagnostic-pitfall-in-neuroendocrine-lesions-of-the-base-of-skull
#7
Amy Prawira, Dorothy Lazinski, Lillian L Siu, Bayardo Perez-Ordonez
Pituitary adenomas presenting in uncommon anatomical locations are commonly misdiagnosed. Dramatic clinical presentation with hemorrhage and infarction, along with a lack of endocrine symptoms may further confound the diagnosis in some patients as illustrated in one of our two previously reported cases of non-small cell neuroendocrine carcinoma of the sinonasal tract and nasopharynx. This report presents the clinical progress of case number 2, which has a revised diagnosis of giant lactotroph pituitary adenoma...
February 14, 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/28195109/metastatic-nasopharyngeal-carcinoma-presenting-as-an-isolated-breast-mass-a-diagnostic-pitfall-and-a-review-of-literature
#8
Trupti Pai, Nita Nair, Gauri Pantvaidya, Kedar Deodhar, Tanuja Shet
Metastases to breast are much rarer than primary breast tumors. We now present a case of 45-year-old female, who presented with an isolated breast mass. A positron emission tomography-computed tomography (PET-CT) done revealed hypermetabolic right breast nodules, soft tissue deposits, and multiple nodal involvement. The biopsy from the breast and axillary lymph node showed dense lymphoid infiltrate and was interpreted initially as granulomatous inflammation. However, the lumps were hard and suspicious for primary breast cancer, so an immunohistochemistry for cytokeratin was performed which highlighted the epithelial cell clusters masked within the inflammatory infiltrate and the diagnosis of undifferentiated carcinoma, lymphoepithelioma-like was made...
January 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28185421/fine-needle-aspiration-findings-of-xp11-translocation-renal-cell-carcinoma-metastatic-to-a-hilar-lymph-node
#9
Reima El Naili, Marlo Nicolas, Amanda Gorena, Maria Luisa C Policarpio-Nicolas
Xp11 translocation renal cell carcinoma (RCC) is a specific type of renal cell carcinoma recently placed under the "MiT family translocation RCC" at the last 2013 ISUP Vancouver classification of renal neoplasia. This tumor contains variable proportions of clear cells and could easily mimic papillary RCC, clear cell type, and clear cell papillary RCC. Given the small number of published cytologic findings of this tumor, it could easily present as a diagnostic pitfall. We describe a case of a 23-year-old man with a history of prior nephrectomy who presented with multiple mediastinal lymphadenopathies on imaging surveillance follow-up...
February 10, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28178719/endometriosis-mimicking-soft-tissue-neoplasms-a-potential-diagnostic-pitfall
#10
Yi Ding, Julie Gibbs, Ge Xiong, Shigong Guo, Shailaja Raj, Marilyn M Bui
Endometriosis is a common gynecological disorder most often involving the pelvic region. Although it is rare, endometriosis occurring outside of the peritoneal cavity most commonly occurs within scars of the abdominal wall, but it has been reported in the lungs, pleura, kidneys, brain, and the extremities. Herein, we present 2 cases of endometriosis, including 1 case of endometriosis of the wrist that clinically mimicked a soft-tissue neoplasm and 1 case of right-groin endometriosis mimicking synovial sarcoma during the initial pathological interpretation of findings on fine needle aspiration...
January 2017: Cancer Control: Journal of the Moffitt Cancer Center
https://www.readbyqxmd.com/read/28176894/autoimmune-hepatitis-current-challenges-and-future-prospects
#11
REVIEW
Yoshio Aizawa, Atsushi Hokari
Autoimmune hepatitis (AIH) is a chronic progressive liver disease characterized by high levels of aminotransferases and autoantibodies, hypergammaglobulinemia, and interface hepatitis. AIH affects all races and all ages worldwide, regardless of sex, although a preponderance of females is a constant finding. The etiology of AIH has not been completely elucidated, but immunogenetic background and environmental parameters may contribute to its development. The most important genetic factor is human leukocyte antigens (HLAs), especially HLA-DR, whereas the role of environmental factors is not completely understood...
2017: Clinical and Experimental Gastroenterology
https://www.readbyqxmd.com/read/28169467/radiation-associated-angiosarcoma-in-the-setting-of-breast-cancer-mimicking-radiation-dermatitis-a-diagnostic-pitfall
#12
Brianne H Daniels, Jennifer S Ko, J Jordi Rowe, Erinn Downs-Kelly, Steven D Billings
BACKGROUND: We have encountered cases of postradiation angiosarcoma (PRAS) histologically mimicking radiation dermatitis. METHODS: Cases of PRAS from institutional/consultation archives from 2006-2016 were reviewed. For inclusion, tumors had to have inapparent/subtle tumor at low magnification and scattered individual tumor cells resembling radiation fibroblasts. Prior ancillary studies were reviewed, with additional immunostains performed as needed. RESULTS: Ten met criteria...
February 7, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28168330/whipple-s-disease-in-granulomatous-disguise-a-challenging-diagnosis-with-many-histopathological-pitfalls
#13
Mieke Van Bockstal, Anne Hoorens, Filip Van den Bosch, David Creytens, Sofie Verbeke, Jo Van Dorpe
No abstract text is available yet for this article.
February 6, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28153134/distinctive-head-and-neck-bone-and-soft-tissue-neoplasms
#14
REVIEW
Bibianna Purgina, Chi K Lai
Benign and malignant primary bone and soft tissue lesions of the head and neck are rare. The uncommon nature of these tumors, combined with the complex anatomy of the head and neck, pose diagnostic challenges to pathologists. This article describes the pertinent clinical, radiographic, and pathologic features of selected bone and soft tissue tumors involving the head and neck region, including angiofibroma, glomangiopericytoma, rhabdomyosarcoma, biphenotypic sinonasal sarcoma, chordoma, chondrosarcoma, and osteosarcoma...
March 2017: Surgical Pathology Clinics
https://www.readbyqxmd.com/read/28153133/odontogenic-cysts-and-neoplasms
#15
REVIEW
Elizabeth Ann Bilodeau, Bobby M Collins
This article reviews a myriad of common and uncommon odontogenic cysts and tumors. The clinical presentation, gross and microscopic features, differential diagnosis, prognosis, and diagnostic pitfalls are addressed for inflammatory cysts (periapical cyst, mandibular infected buccal cyst/paradental cyst), developmental cysts (dentigerous, lateral periodontal, glandular odontogenic, orthokeratinized odontogenic cyst), benign tumors (keratocystic odontogenic tumor, ameloblastoma, adenomatoid odontogenic tumor, calcifying epithelial odontogenic tumor, ameloblastic fibroma and fibroodontoma, odontoma, squamous odontogenic tumor, calcifying cystic odontogenic tumor, primordial odontogenic tumor, central odontogenic fibroma, and odontogenic myxomas), and malignant tumors (clear cell odontogenic carcinoma, ameloblastic carcinoma, ameloblastic fibrosarcoma)...
March 2017: Surgical Pathology Clinics
https://www.readbyqxmd.com/read/28153129/sinonasal-small-round-blue-cell-tumors-an-immunohistochemical-approach
#16
REVIEW
Lisa M Rooper, Justin A Bishop
Although clinical history and morphologic appearance should be the initial considerations when evaluating small round blue cell tumors of the sinonasal tract, the final diagnosis often hinges on immunohistochemical findings. Unfortunately, interpretation of stains in these tumors is fraught with numerous pitfalls and limitations. This article presents an approach to sinonasal small round blue cell tumors based on four common immunohistochemical patterns: cytokeratin positivity, squamous marker positivity, neuroendocrine marker positivity, and cytokeratin negativity...
March 2017: Surgical Pathology Clinics
https://www.readbyqxmd.com/read/28150312/transplant-with-a-twist-a-pitfall-in-sonographic-diagnosis-of-renal-transplant-torsion
#17
Evan Narasimhan, Anne Kennedy, Jeffrey Campsen
Torsion is an uncommon cause of impaired function in a renal transplant. We present a case of intraperitoneal transplant torsion secondary to adhesions to the left fallopian tube and ovary. Inability to confirm renal venous flow with Doppler misled to the erroneous sonographic diagnosis of renal vein thrombosis, although end diastolic flow was absent rather than reversed. The correct diagnosis was made with CT. The combination of abnormal orientation of the graft on ultrasonography, acutely impaired renal function, and abnormal Doppler study should have led to a diagnosis of transplant torsion...
February 2, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/28144719/pitfalls-and-tips-in-the-diagnosis-of-ectopic-pregnancy
#18
REVIEW
E Mausner Geffen, C Slywotzky, G Bennett
Women of reproductive age with pelvic pain, vaginal bleeding, and a positive pregnancy test often require evaluation with pelvic ultrasound. In these situations, the primary role of pelvic ultrasound is to differentiate an ectopic pregnancy from either a normal or abnormal intrauterine pregnancy. While an accurately performed and interpreted pelvic ultrasound results in rapid diagnosis and management, numerous diagnostic pitfalls can lead to negative outcomes. Therefore, familiarity with the appropriate laboratory tests, sonographic technique, and imaging features of ectopic pregnancy is essential for all radiologists...
January 31, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28144156/update-on-the-clinical-management-of-wilson-s-disease
#19
REVIEW
Peter Hedera
Wilson's disease (WD), albeit relatively rare, is an important genetic metabolic disease because of highly effective therapies that can be lifesaving. It is a great imitator and requires a high index of suspicion for correct and timely diagnosis. Neurologic, psychiatric and hepatologic problems in WD are very nonspecific, and we discuss the most common clinical phenotypes. The diagnosis remains laboratory based, and here we review the most important challenges and pitfalls in laboratory evaluation of WD, including the emerging role of genetic testing in WD diagnosis...
2017: Application of Clinical Genetics
https://www.readbyqxmd.com/read/28139419/prostate-mri-for-brachytherapists-diagnosis-imaging-pitfalls-and-post-therapy-assessment
#20
REVIEW
A M Venkatesan, R J Stafford, C Duran, P D Soni, A Berlin, P W McLaughlin
Optimal integration of multiparametric MRI (mp MRI) into prostate brachytherapy practice necessitates an understanding of imaging findings pertinent to prostate cancer detection and staging. This review will summarize prostate cancer imaging findings and tumor staging on mp MRI, including an overview of the Prostate Imaging Reporting and Data System (PIRADS)-structured reporting schema, mp MRI findings observed in the post-therapy setting including cases of post-treatment recurrence, and MRI concepts integral to successful salvage brachytherapy...
January 27, 2017: Brachytherapy
keyword
keyword
46839
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"