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1.
J Am Acad Dermatol ; 78(2): 395-402, 2018 02.
Article in English | MEDLINE | ID: mdl-29056237

ABSTRACT

BACKGROUND: The relationship between hidradenitis suppurativa and diabetes mellitus is not well understood. OBJECTIVE: To compare the prevalence of diabetes mellitus between patients with and without hidradenitis suppurativa. METHODS: We conducted a systematic review and meta-analysis, which included primary observational studies that reported the prevalence of diabetes mellitus among patients with hidradenitis suppurativa in the PubMed, Embase, Cochrane Library, LILACS, and Scielo databases from 1947 to June 13, 2017. A random effects model for pooled odds ratio was used for data analysis. Publication bias was assessed by funnel plot and the Egger test. RESULTS: The systematic review included 107,050 patients from 14 studies; the meta-analysis included 104,373 patients from 7 studies. On the basis of meta-analysis, the prevalence of diabetes mellitus was 10.6% in patients with hidradenitis suppurativa and 3.8% in patients without hidradenitis suppurativa. Compared with the general population, patients with hidradenitis suppurativa were nearly 3 times more likely to have diabetes mellitus (pooled odds ratio, 2.78; 95% confidence interval, 1.79-4.31). LIMITATIONS: We were restricted by the quantity and quality of available data. CONCLUSION: Hidradenitis suppurativa is significantly associated with an increased prevalence of diabetes mellitus.


Subject(s)
Diabetes Mellitus/epidemiology , Hidradenitis Suppurativa/epidemiology , Comorbidity , Humans , Prevalence
2.
Surg Endosc ; 30(9): 3933-42, 2016 09.
Article in English | MEDLINE | ID: mdl-26715015

ABSTRACT

BACKGROUND: The use of laparoscopy for right hemicolectomy has gained popularity allowing the option of a totally laparoscopic intracorporeal anastomosis (IA) for intestinal reconstruction. This technique may alleviate some of the technical limitations that a surgeon faces with a laparoscopic-assisted extracorporeal anastomosis (EA). METHODS: A retrospective chart review of 195 consecutive patients who underwent laparoscopic right hemicolectomy by four colorectal surgeons at three institutions from March 2005 to June 2014 was performed. Multivariate regression analysis was used to compare postoperative and oncologic outcomes. RESULTS: A total of 195 patients underwent laparoscopic right hemicolectomy over the study period, with 86 (44 %) patients receiving IA and 109 (56 %) patients receiving an EA. The most common indication for surgery in both groups was cancer: 56 (65 %) of IA cases and 57 (52 %) of EA cases. IA had a significantly higher rate of minor complications but no difference in serious complications compared to EA. Conversion to open resection was higher in EA. Using multivariate analysis to compare IA versus EA, there was no significant difference in length of stay, return of bowel function, risk of anastomotic leak, risk of intraabdominal abscess or risk of wound complications. Amongst cancer resections, there was no significant difference in the median number of lymph nodes harvested (18 LNs in IA group vs. 19 LNs in EA group, P > 0.05). There was also no significant difference in overall survival and disease-free survival at 5.7 years between the two groups. CONCLUSIONS: IA in laparoscopic right hemicolectomy is associated with similar postoperative and oncologic outcomes compared to EA. IA may possess advantages in terms of conversion and flexibility of specimen extraction, but this is counterbalanced by a higher incidence of minor complications. These findings suggest that IA represents a valid technique in the arsenal of the experienced colorectal surgeon without compromising outcomes.


Subject(s)
Anastomosis, Surgical/methods , Colectomy/methods , Laparoscopy , Aged , Colonic Neoplasms/surgery , Conversion to Open Surgery , Female , Humans , Inflammatory Bowel Diseases/surgery , Male , Middle Aged , Retrospective Studies
3.
J Endourol ; 38(3): 301-305, 2024 Mar.
Article in English | MEDLINE | ID: mdl-38149604

ABSTRACT

Purpose: Early characterization of small (T1a, <4 cm) renal masses is imperative for patient care and treatment planning. Renal biopsy is a sensitive and specific procedure that can accurately differentiate small renal masses as malignant or benign. However, it is an invasive procedure with a nonnegligible complication rate and is not performed routinely at most institutions. In this study, we sought to apply the Retroperitoneal Vascularity Assessment and Scoring in Carcinoma (Re-VASC) scoring system to T1a renal masses and analyzed whether it could differentiate these masses as benign or malignant. Methods: We obtained Institutional Review Board approval to retrospectively examine the records of all patients who presented to our single, urban academic referral center for surgical treatment of renal cell carcinoma (RCC). For the malignant group, patients with a diagnosis of T1a RCC from pathologic evaluation were included. Additionally, patients with a histopathological diagnosis of a T1a nonmalignant renal mass (fat poor-angiomyolipoma or oncocytoma) were included in our benign group. Results: This study includes 57 benign and 69 malignant T1a renal tumors. Average size for benign and malignant masses were 2.47 and 2.63, respectively (p = 0.267). Analysis demonstrated no significant difference between both groups in terms of sex, laterality, or size. The average Re-VASC score of benign and malignant masses was 0.175 and malignant masses was 0.784, respectively (p < 0.001). Additionally, the Re-VASC score was independently associated with malignancy with an odds ratio of 2.223 (p = 0.0109). Conclusion: The Re-VASC scoring system exhibits significantly greater values for malignant T1a renal masses when compared to benign masses. As a result, it shows promise as an adjunctive tool to renal biopsy for clinical decision-making. Further assessment of Re-VASC's true efficacy as a diagnostic marker will include prospective evaluation of a larger multicenter population.


Subject(s)
Angiomyolipoma , Carcinoma, Renal Cell , Kidney Neoplasms , Humans , Carcinoma, Renal Cell/pathology , Retrospective Studies , Kidney Neoplasms/pathology , Nephrectomy , Angiomyolipoma/surgery , Diagnosis, Differential
4.
Curr Probl Diagn Radiol ; 52(5): 367-371, 2023.
Article in English | MEDLINE | ID: mdl-37236842

ABSTRACT

Radiology reports often contain recommendations for follow-up imaging, Provider adherence to these radiology recommendations can be incomplete, which may result in patient harm, lost revenue, or litigation. This study sought to perform a revenue assessment of a hybrid natural language processing (NLP) and human follow-up system. Reports generated from January 2020 to April 2021 that were indexed as overdue from follow-up recommendations by mPower Follow-Up Recommendation Algorithm (Nuance Communications Inc., Burlington, MA), were assessed for follow up and revenue. Follow-up exams completed because of the hybrid system were tabulated and given revenue amounts based on Medicare national reimbursement rates. These rates were then summated. A total of n =3011 patients were flagged via the mPower algorithm as having not received a timely follow-up indicated for procedure. Of these, n = 427 required the quality nurse to contact their healthcare provider to place orders. The follow-up imaging of these patients accounted for $62,937.66 of revenue. This revenue was calculated as higher than personnel cost (based on national average quality and safety nurse salary and time allotted on follow-ups). Our results indicate that a hybrid human-artificial intelligence follow-up system can be profitable, while potentially adding to patient safety. Our revenue figure likely significantly underestimates the true revenue obtained at our institution. This was due to the use of Medicare national reimbursement rates to calculate revenue, for the purposes of generalizability.


Subject(s)
Natural Language Processing , Radiology , Aged , Humans , United States , Artificial Intelligence , Follow-Up Studies , Medicare , Costs and Cost Analysis
5.
J Endourol ; 37(3): 367-373, 2023 03.
Article in English | MEDLINE | ID: mdl-36367194

ABSTRACT

Purpose: Renal cell carcinoma (RCC) is the most common type of kidney cancer worldwide. Although radiologists assess enhancement patterns of renal tumors to predict tumor pathology report, to our knowledge, no formal scoring system has been created and validated to assess the level of neovascularity in RCC, despite its critical role in cancer metastases. In this study, we characterized and analyzed the level of angiogenesis in tumor-burdened kidneys and their benign counterparts. We then created and validated a scoring scale for neovascularity that can help predict tumor staging for RCC. Methods: After Institutional Review Board approval, the charts of patients who had undergone operation for RCC between January 13, 2014 and February 4, 2020 were retrospectively reviewed for inclusion in this study. Inclusion criteria were a diagnosis of RCC, simple/radical nephrectomy, preoperative contrast-enhanced CT scans, and complete pathology reports. Neovascularity was scored on a scale of 0-4 where 0 = no neovascularity detected, 1 = a single vessel <3 mm wide, 2 = a single vessel ≥3 mm wide, 3 = multiple vessels <3 mm wide, and 4 = multiple vessels ≥3 mm wide. Results: A total of 227 patients were included in this study. Most of the tumor pathology reports were clear cell carcinoma, regardless of tumor staging. The average neovascularity score was 1.07 for pT1x tumors, 2.83 for pT2x tumors, and 3.04 for pT3x tumors. There was a significant difference in neovascularity score between pT1x and pT2x tumors (p = 0.0046), pT1x and pT3x tumors (p < 0.0001), and benign kidneys and kidneys with RCC (p < 0.0001). Conclusion: Our novel vascular scoring system for RCC demonstrates significant correlation with RCC pathological tumor staging. This scoring system may be utilized as part of a comprehensive radiological assessment of renal tumors, potentially improving tumor characterization and clinical decision making.


Subject(s)
Carcinoma, Renal Cell , Kidney Neoplasms , Humans , Carcinoma, Renal Cell/diagnostic imaging , Carcinoma, Renal Cell/pathology , Neoplasm Staging , Retrospective Studies , Kidney Neoplasms/diagnostic imaging , Kidney Neoplasms/pathology , Kidney/pathology , Nephrectomy
6.
Heliyon ; 9(5): e15970, 2023 May.
Article in English | MEDLINE | ID: mdl-37305513

ABSTRACT

Background: Lipoleiomyomas are uncommon uterine lesions containing adipose and smooth muscle tissue. They have a variable presentation and are usually found incidentally on imaging or post-hysterectomy tissue analysis. Given their low prevalence, there is a dearth of literature describing imaging characteristics for uterine lipoleiomyomas. In this image-rich case series, we summarize an example of an initial presentation as well as present ultrasound, computed tomography (CT), and magnetic resonance imaging (MRI) findings for 36 patients. Case presentation: We present the detailed clinical course of a representative patient evaluated for uterine lipoleiomyoma and describe imaging findings seen in another 35 patients. This includes ultrasound findings from 16 patients, CT findings from 25 patients, and MRI findings from 5 patients. Among the 36 total patients, symptoms at the time of diagnosis were variable but often included abdominal or pelvic pain; however, most patients were asymptomatic, and the lipoleiomyomas were incidentally discovered on imaging. Conclusions: Uterine lipoleiomyomas are rare and benign tumors with variable presentations. Ultrasound, CT, and MRI findings can assist in diagnosis. Findings on ultrasound typically include well-circumscribed hyperechoic and septated lesions with minimal to no internal blood flow. CT shows fat-containing either homogeneous or heterogeneous circumscribed lesions depending on their ratio of fat and smooth muscle tissue. Lastly, on MRI, uterine lipoleiomyomas commonly appear heterogenous with loss of signal on fat-suppressed sequences. These imaging findings are highly specific for lipoleiomyomas, and familiarity with these findings may reduce unnecessary and potentially invasive procedures.

7.
Curr Probl Diagn Radiol ; 52(6): 501-504, 2023.
Article in English | MEDLINE | ID: mdl-37277270

ABSTRACT

Hepatosplenomegaly is commonly diagnosed by radiologists based on single dimension measurements and heuristic cut-offs. Volumetric measurements may be more accurate for diagnosing organ enlargement. Artificial intelligence techniques may be able to automatically calculate liver and spleen volume and facilitate more accurate diagnosis. After IRB approval, 2 convolutional neural networks (CNN) were developed to automatically segment the liver and spleen on a training dataset comprised of 500 single-phase, contrast-enhanced CT abdomen and pelvis examinations. A separate dataset of ten thousand sequential examinations at a single institution was segmented with these CNNs. Performance was evaluated on a 1% subset and compared with manual segmentations using Sorensen-Dice coefficients and Pearson correlation coefficients. Radiologist reports were reviewed for diagnosis of hepatomegaly and splenomegaly and compared with calculated volumes. Abnormal enlargement was defined as greater than 2 standard deviations above the mean. Median Dice coefficients for liver and spleen segmentation were 0.988 and 0.981, respectively. Pearson correlation coefficients of CNN-derived estimates of organ volume against the gold-standard manual annotation were 0.999 for the liver and spleen (P < 0.001). Average liver volume was 1556.8 ± 498.7 cc and average spleen volume was 194.6 ± 123.0 cc. There were significant differences in average liver and spleen volumes between male and female patients. Thus, the volume thresholds for ground-truth determination of hepatomegaly and splenomegaly were determined separately for each sex. Radiologist classification of hepatomegaly was 65% sensitive, 91% specific, with a positive predictive value (PPV) of 23% and an negative predictive value (NPV) of 98%. Radiologist classification of splenomegaly was 68% sensitive, 97% specific, with a positive predictive value (PPV) of 50% and a negative predictive value (NPV) of 99%. Convolutional neural networks can accurately segment the liver and spleen and may be helpful to improve radiologist accuracy in the diagnosis of hepatomegaly and splenomegaly.

8.
J Med Case Rep ; 16(1): 161, 2022 Apr 23.
Article in English | MEDLINE | ID: mdl-35459195

ABSTRACT

BACKGROUND: Endometriomas are a type of ovarian cyst composed of degenerated blood products from hemorrhage of ectopic endometrial tissue. Endometriomas can rupture, causing hemoperitoneum, and present with signs and symptoms similar to other, more common abdominal emergencies. Therefore, they are not often diagnosed preoperatively. Ultrasound and cross-sectional imaging can assist in diagnosis of endometriomas. We present a case of ruptured endometrioma causing massive hemoperitoneum that was initially suspected to represent malignancy with carcinomatosis. CASE PRESENTATION: A 32-year-old Hispanic woman presented with sharp abdominal pain and 15-pound unintentional weight loss over 6 months. Laboratory work was significant for a negative pregnancy test and elevated cancer antigen-125. Computed tomography of the abdomen and pelvis demonstrated a 13-cm complex cystic mass in the left adnexa with moderate hyperdense ascites and omental nodularity. Ultrasound demonstrated a large left adnexal complex cystic structure with internal echoes, and chest computed tomography showed no signs of intrathoracic neoplastic or infectious processes. Her presentation was concerning for malignancy with carcinomatosis. Fluid from a paracentesis was sent for culture and cytology. Diagnostic laparoscopy revealed that the left ovary had been completely replaced by an endometrioma, which had a small ruptured area superiorly. Brown deposits of endometriosis were present on the cyst, omentum, and various peritoneal linings. Tissue samples of the endometrium, myometrium, cervix, ovaries, fallopian tubes, peritoneum, omentum, and paracolic spaces were taken and showed no hyperplastic, dysplastic, or malignant cells on pathology. CONCLUSIONS: Ruptured endometrioma and ruptured hemorrhagic cyst should be included in the differential diagnosis when a premenopausal female presents with hemoperitoneum in combination with complex adnexal cystic masses in the absence of trauma. Cancer antigen-125 and cancer antigen 19-9 can be falsely elevated in the setting of ruptured endometrioma.


Subject(s)
Endometriosis , Hemoperitoneum , Adult , CA-125 Antigen , Endometriosis/complications , Endometriosis/diagnosis , Endometriosis/surgery , Female , Hemoperitoneum/diagnostic imaging , Hemoperitoneum/etiology , Hemoperitoneum/surgery , Humans , Ovarian Cysts , Peritoneal Neoplasms , Rupture
9.
J Med Case Rep ; 15(1): 597, 2021 Dec 17.
Article in English | MEDLINE | ID: mdl-34915922

ABSTRACT

BACKGROUND: Pneumatosis cystoides intestinalis is a rare and usually benign condition in which multiple thin-walled cysts develop in the submucosa or subserosa of the gastrointestinal tract. While usually asymptomatic, severe cases can result in pneumoperitoneum, which can be managed surgically or medically depending on circumstances. We present a case of a patient with pneumatosis cystoides intestinalis, which presented as pneumoperitoneum following trauma. To our knowledge, there are no other published cases in which a trauma patient with pneumoperitoneum was found to have radiologic evidence of pneumatosis cystoides intestinalis. CASE PRESENTATION: We present the case of a 37-year-old Hispanic male admitted to the hospital after being involved in a motorcycle accident. Computed tomography imaging of the abdomen and pelvis with oral and intravenous contrast demonstrated trace pneumoperitoneum, possibly originating from the splenic flexure of the colon without evidence of extravasation of oral contrast. Laparoscopy with conversion to exploratory laparotomy revealed bowel abnormalities at the distal transverse colon and splenic flexure, which were identified as pneumatosis cystoides intestinalis by pathology. There was no evidence of bowel perforation. A panel of abdominal radiologists attended the computed tomography interpretation to note that incidental atraumatic or traumatic rupture of the cysts could have caused the pneumoperitoneum. The patient had an uncomplicated postoperative course and was transferred to another facility per insurance request. CONCLUSIONS: When presenting in the context of trauma, pneumatosis cystoides intestinalis can lead to difficult management decisions. To our knowledge, there are no existing evidence-based guidelines for the scenario of concurrent pneumatosis cystoides intestinalis, blunt abdominal trauma, and pneumoperitoneum in a patient with a benign abdominal exam. This patient's pneumoperitoneum was likely caused by rupture of preexisting cysts rather than frank bowel perforation. Patients who are asymptomatic, lack signs of clinically worrisome disease, and have a low pretest probability will likely not benefit from surgery and can be medically managed. Thorough discussion between surgeons and radiologists can be helpful when evaluating the clinical significance of a patient's pneumatosis cystoides intestinalis and aid in the decision to perform surgery.


Subject(s)
Cysts , Intestinal Perforation , Pneumatosis Cystoides Intestinalis , Pneumoperitoneum , Abdomen , Adult , Humans , Male , Pneumatosis Cystoides Intestinalis/complications , Pneumatosis Cystoides Intestinalis/diagnostic imaging , Pneumoperitoneum/diagnostic imaging , Pneumoperitoneum/etiology
10.
J Med Case Rep ; 15(1): 634, 2021 Dec 28.
Article in English | MEDLINE | ID: mdl-34963492

ABSTRACT

BACKGROUND: Ganglioneuromas are a benign tumor originating from neural crest cells. As one of the neuroblastic tumors, ganglioneuromas are most common in children, with a mean age at presentation of 7 years. Ganglioneuromas are typically singular in nature, but rarely can present with lymph node involvement and distant metastasis. We present a rare case of a retroperitoneal ganglioneuroma found in a human immunodeficiency virus positive adult, which was complicated by lymph node involvement. This case is notable not only in regard to the age of the patient, but also because of his human immunodeficiency virus positive status and the extension of tumor to lymph nodes. CASE PRESENTATION: A 27-year-old Latino male with history of human immunodeficiency virus presented with a 6-month history of left upper quadrant and epigastric abdominal pain with associated nausea and vomiting. The patient had a computed tomography scan showing a retroperitoneal mass encasing the aorta, celiac axis, and superior mesenteric artery. Core needle biopsy revealed ganglioneuroma. Owing to obstructive symptoms, resection of the mass along with partial gastric resection, partial pancreatic resection, and splenectomy was performed by a multidisciplinary group of surgeons. Pathology results revealed metastatic spread of ganglioneuroma to surrounding lymph nodes. CONCLUSIONS: Ganglioneuromas are most common in children and very rarely occur in adults. However, it is still important to consider this entity in the differential for patients presenting with suspicious symptoms. While rare, it is essential to consider metastasis in this generally benign disease.


Subject(s)
Ganglioneuroma , Retroperitoneal Neoplasms , Abdomen , Adult , Ganglioneuroma/diagnosis , Ganglioneuroma/diagnostic imaging , HIV , Humans , Retroperitoneal Neoplasms/complications , Retroperitoneal Neoplasms/diagnostic imaging , Tomography, X-Ray Computed
11.
J Med Case Rep ; 15(1): 566, 2021 Nov 25.
Article in English | MEDLINE | ID: mdl-34819143

ABSTRACT

BACKGROUND: Patients diagnosed with locally advanced pancreatic cancer are usually not eligible for surgical resection because of significant vascular involvement. Stereotactic body radiation therapy and chemotherapy are the treatments recommended by the National Comprehensive Cancer Network criteria. For patients who do not respond to or tolerate stereotactic body radiation therapy and/or chemotherapy, a new option is irreversible electroporation. Irreversible electroporation is a nonthermal minimally invasive ablation technique that uses electrical pulses to induce apoptosis of tumor cells without damage to the extracellular matrix, thus preserving ducts and vessels. Irreversible electroporation requires very precise needle placement, which has limited its ubiquitous use. Intraprocedural cone-beam computed tomography with navigation can be fused with previous imaging to provide real-time tumor navigation capabilities during the procedure to allow for more accurate needle placement and treatment. Here, we present a patient who underwent percutaneous irreversible electroporation with intraprocedural cone-beam computed tomography fusion guidance to treat his pancreatic cancer. CASE PRESENTATION: The patient, an 88-year-old White male, initially presented with abdominal pain, and was ultimately diagnosed with locally advanced pancreatic cancer. He has an excellent performance status and no other comorbidities. He was started on chemotherapy and radiation therapy, with good response. However, continued vascular involvement of the tumors precluded him from safe surgical resection. The patient underwent irreversible electroporation with intraprocedural cone-beam computed tomography fusion navigation. The primary lesion demonstrates no residual tumor, and the soft tissue involvement of the adjacent vasculature has stabilized. CONCLUSIONS: Although not curative on its own, irreversible electroporation holds promise as a treatment option for patients with locally advanced pancreatic cancer to increase downsizing to curative surgery or increase quality of life. Cone-beam computed tomography navigation can improve irreversible electroporation by providing guidance during needle guidance. Image fusion with previous advanced imaging can improve lesion visualization and targeting, thereby improving the effectiveness of irreversible electroporation.


Subject(s)
Pancreatic Neoplasms , Quality of Life , Aged, 80 and over , Cone-Beam Computed Tomography , Electroporation , Humans , Male , Pancreas , Pancreatic Neoplasms/diagnostic imaging , Pancreatic Neoplasms/therapy , Treatment Outcome
12.
J Med Case Rep ; 15(1): 302, 2021 May 27.
Article in English | MEDLINE | ID: mdl-34039402

ABSTRACT

BACKGROUND: Jejunal lymphatic malformations are congenital lesions that are seldom diagnosed in adults and rarely seen on imaging. CASE PRESENTATION: A 61-year-old Caucasian woman was initially diagnosed and treated for mucinous ovarian carcinoma. After an exploratory laparotomy with left salpingo-oophorectomy, a computed tomography scan of the abdomen and pelvis demonstrated suspicious fluid-containing lesions involving a segment of jejunum and adjacent mesentery. Resection of the lesion during subsequent debulking surgery revealed that the lesion seen on imaging was a jejunal lymphatic malformation and not a cancerous implant. CONCLUSIONS: Abdominal lymphatic malformations are difficult to diagnose solely on imaging but should remain on the differential in adult cancer patients with persistent cystic abdominal lesions despite chemotherapy and must be differentiated from metastatic implants.


Subject(s)
Adenocarcinoma, Mucinous , Jejunum , Adult , Female , Humans , Jejunum/diagnostic imaging , Jejunum/surgery , Laparotomy , Mesentery , Middle Aged , Tomography, X-Ray Computed
13.
Abdom Radiol (NY) ; 46(9): 4388-4400, 2021 09.
Article in English | MEDLINE | ID: mdl-33977352

ABSTRACT

Minimally invasive alternatives to traditional prostate surgery are increasingly utilized to treat benign prostatic hyperplasia and localized prostate cancer in select patients. Advantages of these treatments over prostatectomy include lower risk of complication, shorter length of hospital stay, and a more favorable safety profile. Multiparametric magnetic resonance imaging (mpMRI) has become a widely accepted imaging modality for evaluation of the prostate gland and provides both anatomical and functional information. As prostate mpMRI and minimally invasive prostate procedure volumes increase, it is important for radiologists to be familiar with normal post-procedure imaging findings and potential complications. This paper reviews the indications, procedural concepts, common post-procedure imaging findings, and potential complications of prostatic artery embolization, prostatic urethral lift, irreversible electroporation, photodynamic therapy, high-intensity focused ultrasound, focal cryotherapy, and focal laser ablation.


Subject(s)
Embolization, Therapeutic , Multiparametric Magnetic Resonance Imaging , Prostatic Hyperplasia , Prostatic Neoplasms , Humans , Magnetic Resonance Imaging , Male , Prostatic Hyperplasia/diagnostic imaging , Prostatic Hyperplasia/surgery , Prostatic Neoplasms/diagnostic imaging , Prostatic Neoplasms/surgery
14.
J Endourol ; 35(9): 1411-1418, 2021 09.
Article in English | MEDLINE | ID: mdl-33847156

ABSTRACT

Background: Renal-cell carcinoma is the most common kidney cancer and the 13th most common cause of cancer death worldwide. Partial nephrectomy and percutaneous ablation, increasingly utilized to treat small renal masses and preserve renal parenchyma, require precise preoperative imaging interpretation. We sought to develop and evaluate a convolutional neural network (CNN), a type of deep learning (DL) artificial intelligence (AI), to act as a surgical planning aid by determining renal tumor and kidney volumes through segmentation on single-phase CT. Materials and Methods: After Institutional Review Board approval, the CT images of 319 patients were retrospectively analyzed. Two distinct CNNs were developed for (1) bounding cube localization of the right and left hemiabdomen and (2) segmentation of the renal parenchyma and tumor within each bounding cube. Training was performed on a randomly selected cohort of 269 patients. CNN performance was evaluated on a separate cohort of 50 patients using Sorensen-Dice coefficients (which measures the spatial overlap between the manually segmented and neural network-derived segmentations) and Pearson correlation coefficients. Experiments were run on a graphics processing unit-optimized workstation with a single NVIDIA GeForce GTX Titan X (12GB, Maxwell Architecture). Results: Median Dice coefficients for kidney and tumor segmentation were 0.970 and 0.816, respectively; Pearson correlation coefficients between CNN-generated and human-annotated estimates for kidney and tumor volume were 0.998 and 0.993 (p < 0.001), respectively. End-to-end trained CNNs were able to perform renal parenchyma and tumor segmentation on a new test case in an average of 5.6 seconds. Conclusions: Initial experience with automated DL AI demonstrates that it is capable of rapidly and accurately segmenting kidneys and renal tumors on single-phase contrast-enhanced CT scans and calculating tumor and renal volumes.


Subject(s)
Deep Learning , Kidney Neoplasms , Artificial Intelligence , Humans , Image Processing, Computer-Assisted , Kidney/diagnostic imaging , Kidney/surgery , Kidney Neoplasms/diagnostic imaging , Kidney Neoplasms/surgery , Nephrons/diagnostic imaging , Nephrons/surgery , Retrospective Studies
15.
Cancers (Basel) ; 12(5)2020 May 11.
Article in English | MEDLINE | ID: mdl-32403240

ABSTRACT

Prostate carcinoma is one of the most prevalent cancers worldwide. Multiparametric magnetic resonance imaging (mpMRI) is a non-invasive tool that can improve prostate lesion detection, classification, and volume quantification. Machine learning (ML), a branch of artificial intelligence, can rapidly and accurately analyze mpMRI images. ML could provide better standardization and consistency in identifying prostate lesions and enhance prostate carcinoma management. This review summarizes ML applications to prostate mpMRI and focuses on prostate organ segmentation, lesion detection and segmentation, and lesion characterization. A literature search was conducted to find studies that have applied ML methods to prostate mpMRI. To date, prostate organ segmentation and volume approximation have been well executed using various ML techniques. Prostate lesion detection and segmentation are much more challenging tasks for ML and were attempted in several studies. They largely remain unsolved problems due to data scarcity and the limitations of current ML algorithms. By contrast, prostate lesion characterization has been successfully completed in several studies because of better data availability. Overall, ML is well situated to become a tool that enhances radiologists' accuracy and speed.

16.
JAMA Dermatol ; 155(2): 178-187, 2019 02 01.
Article in English | MEDLINE | ID: mdl-30540348

ABSTRACT

Importance: Atopic dermatitis (AD) is a chronic inflammatory skin disease associated with numerous psychiatric comorbidities. However, the association between AD and suicidality has not been well established. Objective: To synthesize the available literature to evaluate the association between AD and suicidality. Data Source: The protocol was prospectively registered in the PROSPERO database (CRD42018105291). Study Selection: Per PRISMA guidelines, PubMed, Embase, PsycINFO, and Cochrane databases were systematically searched for relevant articles published from 1946 to May 25, 2018. The search criteria for PubMed were as follows: (dermatitis, atopic [MeSH] OR eczema [MeSH]) AND (suicidal ideation [MeSH] OR suicide, attempted [MeSH] OR suicide [MeSH] OR suicidality OR suicidal behavior). The search criteria for Embase, PsycINFO, and Cochrane were as follows: (atopic dermatitis OR eczema) AND (suicidal ideation OR suicide attempt OR suicide OR suicidality OR suicidal behavior). Data Extraction and Synthesis: This systematic review and meta-analysis performed in an academic medical setting included observational studies that evaluated suicidal ideation, suicide attempts, and completed suicide among patients with AD. Main Outcome and Measure: The quality of included studies was assessed using the Newcastle-Ottawa Scale for observational studies. Results: The analysis identified 15 studies with a total of 4 770 767 participants, of whom 310 681 were patients with AD (52.7% female) and 4 460 086 served as controls (50.9% female). In the meta-analyses, patients with AD were 44% more likely to exhibit suicidal ideation (pooled odds ratio, 1.44; 95% CI, 1.25-1.65) and 36% more likely to attempt suicide (pooled odds ratio, 1.36; 95% CI, 1.09-1.70) compared with patients without AD. Studies investigating completed suicides in patients with AD had inconsistent results. Conclusions and Relevance: Results of this study suggest that patients with AD are at significantly increased risk of suicidal ideation and suicide attempts. It is important for dermatology providers to be aware of this risk, screen for suicidality in patients with AD, and make mental health referrals when necessary.


Subject(s)
Dermatitis, Atopic/epidemiology , Dermatitis, Atopic/psychology , Suicidal Ideation , Suicide, Attempted/statistics & numerical data , Suicide/statistics & numerical data , Adult , Databases, Factual , Dermatitis, Atopic/diagnosis , Female , Humans , Incidence , Male , Middle Aged , Registries , Risk Assessment , Suicide/psychology , Suicide, Attempted/psychology , Young Adult
17.
Semin Arthritis Rheum ; 48(6): 1093-1104, 2019 06.
Article in English | MEDLINE | ID: mdl-30446173

ABSTRACT

BACKGROUND: Though anti-tumor necrosis factor agents (anti-TNFs) have been recommended as third-line therapy for sarcoidosis, an up-to-date systematic synthesis of their efficacy and safety is lacking. OBJECTIVES: To systematically review the literature to characterize the efficacy and safety of anti-TNFs in sarcoidosis. SETTINGS: All countries and treatment settings were included. METHODS: We searched MEDLINE, EMBASE, CINAHL, Web of Science, ClinicalTrials.gov, Cochrane Library, and Google Scholar from inception to November 27, 2017. Studies of five or more cases of sarcoidosis treated with anti-TNFs were included. Descriptive statistics were performed. RESULTS: Sixty-five studies (including five randomized controlled trials [RCTs]) were identified, comprising 1525 patients. For pulmonary sarcoidosis, one RCT found infliximab (IFX) significantly improved vital capacity vs. placebo; a second detected no difference. In non-randomized studies, IFX improved pulmonary function in 79% of patients. For cutaneous sarcoidosis, compared to placebo, adalimumab (ADA) showed greater Physician Global Assessment response and significantly reduced target lesion area, and IFX significantly decreased Sarcoidosis Area and Severity Index induration and erythema scores. In non-randomized studies of cutaneous, ocular, neurologic, and multisystem sarcoidosis, IFX improved 89%, 69%, 77%, and 71% of cases, respectively. ADA improved 77% of ocular sarcoidosis cases. IFX displayed a steroid-sparing effect. Half of patients relapsed after discontinuation of IFX, ADA, etanercept, or certolizumab pegol. In RCTs, compared to placebo, anti-TNFs had comparable overall and serious adverse events and slightly more serious infections. CONCLUSIONS: Available evidence suggests the efficacy and safety of IFX in pulmonary, cutaneous, ocular, neurologic, and multisystem sarcoidosis, and ADA in cutaneous and ocular sarcoidosis.


Subject(s)
Sarcoidosis/drug therapy , Tumor Necrosis Factor Inhibitors/therapeutic use , Humans , Treatment Outcome , Tumor Necrosis Factor Inhibitors/adverse effects
18.
Radiol Case Rep ; 14(6): 750-754, 2019 Jun.
Article in English | MEDLINE | ID: mdl-30992734

ABSTRACT

Renal capillary hemangiomas are rare and benign vascular tumors which are typically incidentally discovered on imaging. Surgical excision is often performed, as imaging appearance is similar to malignant lesions. Renal hemangiomas are typically solitary and unilateral. We present a rare case of multiple renal capillary hemangiomas in a patient with end-stage renal disease. Two hemangiomas were detected on imaging and 2 smaller hemangiomas were detected upon pathological evaluation, suggesting there may be a wider prevalence of smaller, radiographically-occult renal hemangiomas.

19.
J Dermatolog Treat ; 29(3): 295-299, 2018 May.
Article in English | MEDLINE | ID: mdl-28866954

ABSTRACT

PURPOSE: The primary aim of this study was to evaluate the readability, understandability, suitability and actionability of online psoriasis patient educational materials. A secondary aim was to identify areas for improvement. MATERIALS AND METHODS: We conducted an evaluation study to assess online psoriasis patient educational materials from the American Academy of Dermatology and National Psoriasis Foundation available in July 2017. We used two validated assessment tools specific to online healthcare materials. Outcomes were expressed as percentages, where higher percentages corresponded to higher quality materials. RESULTS: Overall, the educational materials had a mean understandability score (72.7%) that was understandable; a suitability score (58.8%) that was adequate; a reading grade level (10.5) that was not readable; and an actionability score (54.7%) that was not actionable. Areas of improvement include reading grade level, visual aids, word choice, specific steps for actions and cultural appropriateness. CONCLUSIONS: Online psoriasis patient educational materials are understandable and suitable, but they are written above the American Medical Association and National Institutes of Health's recommended 6th-8th grade reading level and are not actionable. Materials can benefit from decreasing reading grade level, including more visual elements, incorporating more actionable items and being culturally inclusive.


Subject(s)
Teaching Materials , Comprehension , Humans , Internet , Patient Education as Topic , Psoriasis/psychology
20.
Otolaryngol Head Neck Surg ; 154(3): 460-4, 2016 Mar.
Article in English | MEDLINE | ID: mdl-26861227

ABSTRACT

OBJECTIVE: Patients use several online resources to learn about vocal cord paralysis (VCP). The objective of this study was to assess the readability and understandability of online VCP patient education materials (PEMs), with readability assessments and the Patient Education Materials Evaluation Tool (PEMAT), respectively. The relationship between readability and understandability was then analyzed. STUDY DESIGN AND SETTING: Descriptive and correlational design. METHOD: Online PEMs were identified by performing a Google search with the term "vocal cord paralysis." After scientific webpages, news articles, and information for medical professionals were excluded, 29 articles from the first 50 search results were considered. Readability analysis was performed with 6 formulas. Four individuals with different educational backgrounds conducted understandability analysis with the PEMAT. Fleiss's Kappa interrater reliability analysis determined consistency among raters. Correlation between readability and understandability was determined with Pearson's correlation test. RESULTS: The reading level of the reviewed articles ranged from grades 9 to 17. Understandability ranged from 29% to 82%. Correlation analysis demonstrated a strong negative correlation between materials' readability and understandability (r = -0.462, P < .05). CONCLUSION: Online PEMs pertaining to VCP are written above the recommended reading levels. Overall, materials written at lower grade levels are more understandable. However, articles of identical grade levels had varying levels of understandability. The PEMAT may provide a more critical evaluation of the quality of a PEM when compared with readability formulas. Both readability and understandability should be used to evaluate PEMs.


Subject(s)
Comprehension , Health Literacy , Patient Education as Topic , Reading , Teaching Materials , Vocal Cord Paralysis , Humans
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