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1.
Environ Monit Assess ; 195(11): 1328, 2023 Oct 17.
Artículo en Inglés | MEDLINE | ID: mdl-37847426

RESUMEN

Sand dams are a form of rainwater harvesting, prolific in arid and semi-arid lands. Water is provided partly via handpumps, which, as the only improved method of abstraction from sand dams, are important for drinking water security. Accelerometers and cellular transmitters were fitted to 30 handpumps by the Africa Sand Dam Foundation (ASDF) in 2019 to monitor the use and reliability of the handpumps by recording hourly water volume abstracted. Data from April 2019 to October 2021 for 26 of these sites, alongside qualitative data, were analysed and each handpump's contribution to year-round water security was explored, focusing on the long dry season when water supply from other sources is compromised. Abstraction was over 20 times higher in the long dry season than in any other season, and at sites with higher salinity, higher livestock use, and larger dam wall area. At 21 wells, abstraction was still being recorded at the end of at least one long dry season; however, high spatial and temporal heterogeneity between pumps and seasons means that not all sand dams deliver reliable water supply year-round. Quantifying the contribution that sand dams make to water security is crucial for understanding their resilience against a changing climate and can aid decision makers when choosing the most appropriate water management technique. Knowledge of temporal and site heterogeneity in abstraction can inform when other water sources need increasing and can help with sand dam design optimisation. Overall, our results indicate the positive contribution that sand dams make to year-round water security through the water that is abstracted through handpumps.


Asunto(s)
Agua Potable , Agua , Arena , Reproducibilidad de los Resultados , Monitoreo del Ambiente , Abastecimiento de Agua
2.
World J Surg Oncol ; 20(1): 78, 2022 Mar 11.
Artículo en Inglés | MEDLINE | ID: mdl-35272690

RESUMEN

BACKGROUND: Pseudomyxoma peritonei (PMP) syndrome is a disease process that typically occurs from ruptured appendiceal mucocele neoplasms. PMP syndrome arising from malignant transformation of an ovarian primary mature cystic teratoma (MCT) is a pathogenesis rarely encountered. CASE PRESENTATION: Herein, we report a 28-year-old patient evaluated and treated for a right ovarian mass and large volume symptomatic abdominopelvic mucinous ascites. Molecular profiling and genetic analysis revealed mutations in ATM, GNAS, and KRAS proteins while IHC demonstrated gastrointestinal-specific staining for CK20, CDX2, CK7, and SATB2. Peritoneal cytology showed paucicellular mucin. Diffuse peritoneal adenomucinosis (DPAM) variant of PMP arising from a ruptured ovarian primary MCT after malignant transformation to a low-grade appendiceal-like mucinous neoplasm was ultimately confirmed. Treatment included staged therapeutic tumor debulking and right salpingo-oophorectomy followed by cytoreductive surgery and hyperthermic intraperitoneal chemotherapy (HIPEC). CONCLUSIONS: Our report builds upon the existing literature supporting this aggressive treatment option reserved for advanced abdominal malignancies utilized in this patient with a rare clinical entity.


Asunto(s)
Procedimientos Quirúrgicos de Citorreducción , Quimioterapia Intraperitoneal Hipertérmica , Neoplasias Ováricas , Seudomixoma Peritoneal , Teratoma , Adulto , Femenino , Humanos , Neoplasias Ováricas/complicaciones , Neoplasias Ováricas/tratamiento farmacológico , Neoplasias Ováricas/patología , Neoplasias Ováricas/cirugía , Ovariectomía , Neoplasias Peritoneales/tratamiento farmacológico , Neoplasias Peritoneales/etiología , Neoplasias Peritoneales/patología , Neoplasias Peritoneales/cirugía , Peritoneo/patología , Peritoneo/cirugía , Seudomixoma Peritoneal/tratamiento farmacológico , Seudomixoma Peritoneal/etiología , Seudomixoma Peritoneal/patología , Seudomixoma Peritoneal/cirugía , Salpingectomía , Síndrome , Teratoma/complicaciones , Teratoma/tratamiento farmacológico , Teratoma/patología , Teratoma/cirugía
3.
Int J Gynecol Pathol ; 40(6): 549-555, 2021 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-33323861

RESUMEN

Uterine smooth muscle tumors are the most common tumors of the female genital tract and include leiomyoma (LM) and its variants, smooth muscle tumors of uncertain malignant potential (STUMP), and leiomyosarcoma (LMS). Accurate diagnosis of LMS is determined by nuclear atypia, mitotic count, and the presence or absence of tumor cell necrosis, a process which is often difficult and subjective. In this study, we correlated digital quantification of proliferation marker Ki-67 and mitotic marker phosphohistone H3 (PHH3) to mitotic count, classification of uterine smooth muscle tumors, and clinical outcomes. A total of 39 cases (17 LMS, 5 STUMP, 10 LM with bizarre nuclei, and 7 LM) were included. Mitotic count, Ki-67, and PHH3 were significantly correlated. When comparing the LMS group to the STUMP, LM with bizarre nuclei, and LM groups combined, LMS showed a significantly greater digital quantification of Ki-67 (median 10.6% vs. 0.4%, P<0.001) and PHH3 (median 0.5% vs. 0.14%, P=0.022). Ki-67 was a better predictor of LMS compared with PHH3 (area under the curve 0.92 vs. 0.73, P=0.017). Above a threshold Ki-67 value of 3.8%, the sensitivity was 82% and specificity was 91%. Clinical outcomes were available for 10 patients (8 LMS and 2 STUMP), and inferior progression-free survival was noted for patients with higher Ki-67 values. Overall, this study suggests that digital quantification of Ki-67 can potentially aid in diagnosis of LMS.


Asunto(s)
Leiomioma , Leiomiosarcoma , Tumor de Músculo Liso , Neoplasias Uterinas , Biomarcadores de Tumor , Femenino , Humanos , Inmunohistoquímica , Antígeno Ki-67 , Leiomioma/diagnóstico , Leiomiosarcoma/diagnóstico , Tumor de Músculo Liso/diagnóstico , Neoplasias Uterinas/diagnóstico
4.
Int J Gynecol Pathol ; 37(1): 44-51, 2018 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-28319570

RESUMEN

Microcystic, elongated, and fragmented (MELF) pattern invasion is a poor prognostic indicator in uterine endometrioid carcinoma, but its existence, biology, and prognostic value have not been described in ovarian endometrioid carcinoma. We evaluated cases of ovarian endometrioid carcinoma without synchronous uterine endometrioid carcinoma for MELF and other histologic features. To evaluate tumor biology, we assessed an immunohistochemical profile, including MLH1, PMS2, MSH2, MSH6, ß-catenin, e-cadherin, CK19, and cyclin D1. A retrospective chart review evaluated clinical and demographic features and survival. The Fisher exact test analyzed data. The Kaplan-Meier method assessed overall survival. Forty-two patients met inclusion criteria. MELF was found in 45%. Two MELF cases showed MSH2/MSH6 deficiency and 2 conventional cases showed PMS2 deficiency. Clear cell features were seen exclusively in MELF cases (P-value=0.044). No difference was identified in overall survival, cancer recurrence, serous features, concurrent endometriosis, lymphovascular space invasion, lymph node metastasis, bilaterality of disease, extranodal metastasis, or remainder of immunohistochemical profile. MELF occurs at similar rates in ovarian endometrioid carcinoma and uterine endometrioid carcinoma and can be helpful in defining ovarian endometrioid carcinoma as it proves definitive invasion. Recurrence and overall survival in ovarian endometrioid carcinoma are not affected by MELF. Clear cell features are identified exclusively in MELF cases. Different mismatch repair proteins are lost in MELF compared with conventional ovarian endometrioid carcinomas. Given its association with clear cell features and mismatch repair protein loss, presence of MELF may be useful in clinical decisions regarding surgical staging and Lynch syndrome screening.


Asunto(s)
Carcinoma Endometrioide/patología , Neoplasias Endometriales/patología , Carcinoma Endometrioide/diagnóstico , Estudios de Cohortes , Neoplasias Colorrectales Hereditarias sin Poliposis/patología , Reparación de la Incompatibilidad de ADN , Neoplasias Endometriales/diagnóstico , Femenino , Humanos , Estimación de Kaplan-Meier , Metástasis Linfática , Persona de Mediana Edad , Pronóstico , Estudios Retrospectivos
7.
J Emerg Med ; 52(2): 205-207, 2017 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-27692838

RESUMEN

BACKGROUND: Injuries in divers resulting purely from impact with the water are uncommon in the published literature. We present a case report of pulmonary contusion in a young diver. CASE REPORT: A young, healthy competitive platform diver landed flat on his back in the water from a dive of 10 meters. He complained of upper back pain and had an episode of hemoptysis after the dive. He was initially observed for 15 hours postinjury, and was discharged when three chest radiographs (CXRs) taken at 1, 7, and 11 hours postinjury did not show significant abnormalities. Thirty-six hours postinjury, the patient experienced repeat hemoptysis and returned to the emergency department, where a fourth CXR performed 43 hours postinjury was normal. A computed tomography (CT) scan revealed pulmonary contusion and traumatic subpleural pneumatoceles. The patient was admitted to the cardiothoracic ward for observation. He recovered well with conservative treatment and was discharged on the fifth day after injury with clearance for air travel. In this patient with a high-energy mechanism of rapid deceleration and hemoptysis at the scene, there may be grounds for performing a CT scan of the thorax at the time of the first presentation, although the CT findings did not change conservative management of this patient. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: Emergency physicians should recognize that a dive into water may generate sufficient impact to produce a pulmonary contusion. If the patient is clinically well and the CXR results are normal, the decision to initiate a CT scan and subsequent disposition may be based on clinical judgement and institutional practice.


Asunto(s)
Contusiones/diagnóstico , Lesión Pulmonar/diagnóstico , Adulto , Contusiones/diagnóstico por imagen , Contusiones/terapia , Buceo , Servicio de Urgencia en Hospital/organización & administración , Hemoptisis/etiología , Humanos , Lesión Pulmonar/terapia , Masculino , Tomografía Computarizada por Rayos X/métodos
8.
Breast J ; 20(1): 15-21, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24438063

RESUMEN

Nipple-sparing mastectomy (NSM) is an increasingly utilized surgical option in managing breast carcinoma; however, data on malignant involvement of a separately submitted nipple margin are scant. Consecutive NSM, including those performed for therapeutic and prophylactic purposes, over a 4-year period (2007-2011), were studied. A separately submitted nipple margin was evaluated by permanent H&E preparations and via frozen section evaluation whenever requested. 325 consecutive NSM specimens, 208 (64%) therapeutic-NSM, and 117 (36%) prophylactic-NSM were studied. All nipples were clinically unremarkable. 86% (179/208) of nipple margins from therapeutic-NSM and 100% (117/117) from prophylactic-NSM showed no histopathologic abnormality. 14% (29/208) of nipple margins from therapeutic-NSM and no nipple margin from prophylactic-NSM showed malignancy. Frozen section evaluation was performed in 188/325 NSM (58%) with a sensitivity of 64% and specificity of 99%. Central tumor location and stage N2/N3 lymph node status were significantly associated with nipple margin positivity (χ(2) ≤ 0.05). Subsequent nipple resection was performed in 69% (20/29) of nipple margin-positive cases with residual malignancy found in 40% (8/20, including three cases of invasive carcinoma). In a mean follow-up of 33 months, one invasive carcinoma recurred in the "saved" nipple, 36 months after therapeutic-NSM. 14% (29/208) of nipple margins in therapeutic-NSM and no nipple margin (0/117) in prophylactic-NSM showed malignancy. Central tumor location and N2/N3 stage were significantly associated with nipple margin positivity (χ(2) ≤ 0.05).


Asunto(s)
Neoplasias de la Mama/patología , Neoplasias de la Mama/cirugía , Mastectomía Segmentaria/métodos , Mastectomía Subcutánea/métodos , Pezones , Adulto , Anciano , Anciano de 80 o más Años , Carcinoma Intraductal no Infiltrante/patología , Carcinoma Intraductal no Infiltrante/cirugía , Femenino , Humanos , Ganglios Linfáticos/patología , Persona de Mediana Edad , Pezones/patología , Pezones/cirugía , Estudios Retrospectivos
9.
Am J Clin Pathol ; 161(4): 369-373, 2024 Apr 03.
Artículo en Inglés | MEDLINE | ID: mdl-38035727

RESUMEN

OBJECTIVES: In another publication, we concluded endocervical curettage (ECC) should have a minimum number of squamous cells for adequacy, similar to the requirements for adequate cervical Papanicolaou smears. Here, we investigate if also, similar to cervical Papanicolaou smears, the presence of at least 10 cells from the endocervical/transformation zone (EC/TZ) in ECCs should be used as a quality assurance measure or if, instead, at least 10 EC/TZ cells should be part of the adequacy criteria for ECC, with an emphasis on diagnosis of at least high-grade squamous dysplasia (HGD). METHODS: All patients with at least HGD diagnosed on an excisional biopsy specimen (loop electrosurgical excision procedure [LEEP]) from May 1, 2018, to December 31, 2019, and an ECC in the preceding 6 months at our institution were included. Number of EC/TZ cells present in ECCs was counted visually and categorized as less than or greater than 10 TZ cells. A χ2 test was used to evaluate the proportion of ECCs with and without HGD and the presence or absence of at least 10 EC/TZ cells. Given our recent work encouraging at least 1000 squamous cells in an ECC to be considered adequate, we also evaluated only ECCs with greater than 1000 squamous cells with and without HGD and the presence or absence of at least 10 EC/TZ cells. P value was <.05. RESULTS: Fifty-one LEEPs with HGD and a preceding ECC in the previous 6 months were identified. Of the 51 ECCs, 6 had fewer than 10 EC/TZ cells and 45 had at least 10 EC/TZ cells. A similar proportion of the ECCs with HGD had at least 10 EC/TZ cells as those without HGD (93% vs 86%, P = .53). Using only ECCs with greater than 1000 squamous cells, we still found no statistical difference in the proportion of ECCs with HGD having greater than 10 EC/TZ cells compared to those without HGD (91% vs 100%, P = .49). CONCLUSIONS: We found that the presence of at least 10 EC/TZ cells does not increase the likelihood of finding HGD in an ECC performed in the 6 months prior to a LEEP with HGD. Similar to the use of the TZ component in cervical Papanicolaou smears, the presence or absence of at least 10 TZ cells in an ECC should only be considered a quality assurance measure and not be used as a criterion for adequacy of the specimen.


Asunto(s)
Displasia del Cuello del Útero , Neoplasias del Cuello Uterino , Femenino , Humanos , Embarazo , Neoplasias del Cuello Uterino/diagnóstico , Estudios Retrospectivos , Cuello del Útero/cirugía , Cuello del Útero/patología , Prueba de Papanicolaou , Legrado/métodos , Displasia del Cuello del Útero/diagnóstico , Frotis Vaginal , Colposcopía/métodos
10.
Singapore Med J ; 2024 Jan 23.
Artículo en Inglés | MEDLINE | ID: mdl-38263549

RESUMEN

INTRODUCTION: Emergency department (ED) admissions for non-work-related injuries and illnesses in the migrant worker (MW) population in Singapore are not well studied. We aimed to examine ED triage acuity and bills associated with admissions among MW for non-trauma, workplace injury (WI) trauma, and non-workplace injury (NWI) trauma. METHODS: In this retrospective observational study, we included all work permit holders admitted to hospital via the ED of three public hospitals from 1 May 2016 to 31 October 2016. Data obtained from medical records included demographics, triage acuity and bill information. RESULTS: There were 1,750 unique patients accounting for 1,788 admissions. The median age was 33 (interquartile range 27-40) years, with a male predominance of 67%. Trauma accounted for 33% ( n = 595) of admissions, and of these, 73% ( n = 433) were due to WI. Admissions for NWI, as compared to WI, were more likely to present as high acuity P1 cases (43% vs 24%, P < 0.001), be conveyed by ambulance (49% vs 24%, P < 0.001) and result in trauma team activations (29% vs 7%, P < 0.001). More NWI admissions (22%, 36/162) exceeded the insurance claim limit under prevailing healthcare policies, as compared to WI admissions (3%, 13/433). CONCLUSION: Migrant workers are admitted to hospital for non-trauma conditions more frequently than for trauma. Non-workplace injury trauma may be severe. Non-trauma and NWI admissions can result in large bills that exceed mandatory insurance coverage. Recent changes to healthcare policy governing MW to allow copayment of large bills and better access to primary care are timely.

11.
Am J Pathol ; 180(6): 2536-47, 2012 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-22503752

RESUMEN

Numerous studies support the role for mutations in the phosphatase and tensin homologue (PTEN) tumor suppressor gene and unopposed estrogen stimulation in the pathogenesis of uterine endometrioid carcinoma. However, the relation between PTEN signaling and estrogen/estrogen receptor in endometrial tumorigenesis remains unresolved. We used genetically engineered mice as a model to address this relation. Mice with a single deleted Pten allele (Pten(+/-)) spontaneously develop complex atypical hyperplasia and ~20% develop endometrial cancer. To determine the effect of removing endogenous estrogen, we performed oophorectomies on Pten(+/-) mice. Although there was a reduction in the number and severity of hyperplastic lesions, the endometrial phenotype persisted, suggesting that Pten mutation, independent of estrogen, can initiate the development of complex atypical hyperplasia. To recapitulate the situation in women with unopposed estrogen, we implanted 17ß-estradiol pellets in adult female Pten heterozygous mice, resulting in increased carcinoma incidence. Because studies have shown that estrogen largely acts on the endometrium via estrogen receptor ERα, we generated Pten(+/-)ERα(-/-) mice. Strikingly, 88.9% of Pten(+/-)ERα(-/-) mice developed endometrial hyperplasia/carcinoma. Furthermore, Pten(+/-)ERα(-/-) mice showed a higher incidence of in situ and invasive carcinoma, suggesting that endometrial tumorigenesis can progress in the absence of ERα. Thus, the relation between Pten alterations and estrogen signaling in the development of endometrial carcinoma is complex; the results presented herein have important implications for the treatment of endometrial hyperplasia and carcinoma in women.


Asunto(s)
Transformación Celular Neoplásica/genética , Neoplasias Endometriales/genética , Receptor alfa de Estrógeno/fisiología , Estrógenos/fisiología , Fosfohidrolasa PTEN/genética , Animales , Transformación Celular Neoplásica/efectos de los fármacos , Transformación Celular Neoplásica/metabolismo , Transformación Celular Neoplásica/patología , Ciclina D1/metabolismo , Progresión de la Enfermedad , Hiperplasia Endometrial/genética , Hiperplasia Endometrial/metabolismo , Hiperplasia Endometrial/patología , Hiperplasia Endometrial/fisiopatología , Neoplasias Endometriales/metabolismo , Neoplasias Endometriales/patología , Neoplasias Endometriales/fisiopatología , Estradiol/farmacología , Estradiol/fisiología , Estrógenos/farmacología , Femenino , Eliminación de Gen , Glucógeno Sintasa Quinasa 3/metabolismo , Glucógeno Sintasa Quinasa 3 beta , Ratones , Ratones Transgénicos , Invasividad Neoplásica , Ovariectomía , Fosfohidrolasa PTEN/fisiología , Lesiones Precancerosas/genética , Lesiones Precancerosas/metabolismo , Lesiones Precancerosas/patología , Lesiones Precancerosas/fisiopatología , Transducción de Señal/fisiología
13.
Acad Pathol ; 10(1): 100068, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36798955

RESUMEN

Medical autopsy has historically been considered a valued experience in undergraduate medical education; however, student participation has declined in recent years. Medical education literature from the educator point of view supports autopsy as an educational tool, but more data are needed on undergraduate medical students' (UMS) perspectives on autopsy. This study aims to assess UMS opinions on the role of autopsy in undergraduate medical education. A 5-point Likert scale survey concerning autopsy and medical education was offered to all UMS at Sidney Kimmel Medical College. In addition, 28 senior students were assigned a 500 word essay on hospital autopsy and its role in medical education. Senior students were given the opportunity to view an autopsy prior to completing their essays. UMS (n = 87) reported that witnessing an autopsy can improve anatomic knowledge (µ = 4.3), observational skills (µ = 4.1), and clinicopathologic correlation (µ = 4.3) but were neutral in their perceived importance of viewing an autopsy in their pathology education (µ = 3.7). Senior students (n = 27) responding to the essay prompt reported that autopsy is essential in medical education (85.2%) and increases clinical and anatomical understanding (63.0%). This study suggests that many UMS acknowledge the importance and applicability of autopsy in their education. This concurrence of UMS opinion with the medical education literature supports making autopsy participation a widely available component of undergraduate medical education.

14.
Epigenet Insights ; 16: 25168657231184665, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37425024

RESUMEN

Background: The global pandemic of coronavirus disease 2019 (COVID-19) is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). About 18.4% of total Covid-19 cases were reported in children. Even though vertical transmission from mother to infant is likely to occur at a low rate, exposure to COVID-19 during fetal life may alter DNA methylation patterns with potential long-term effects. Objective: To determine if COVID-19 infection during pregnancy alters the DNA methylation patterns in umbilical cord blood cells from term infants and to identify potential pathways and genes affected by exposure to COVID-19 infection. Methods: Umbilical cord blood was collected from 8 infants exposed to COVID-19 during pregnancy and 8 control infants with no COVID-19 exposure. Genomic DNA was isolated from umbilical cord blood cells and genome-wide DNA methylation was performed using Illumina Methylation EPIC Array. Results: 119 differentially methylated loci were identified at the FDR level of 0.20 (64 hypermethylated loci and 55 hypomethylated loci) in umbilical cord blood cells of COVID-19 exposed neonates compared to the control group. Important canonical pathways identified by Ingenuity Pathway Analysis (IPA) were related to stress response (corticotropin releasing hormone signaling, glucocorticoid receptor signaling, and oxytocin in brain signaling pathway), and cardiovascular disease and development (nitric oxide signaling in the cardiovascular system, apelin cardiomyocyte signaling pathways, factors promoting cardiogenesis, and renin-angiotensin signaling). The genes affected by the differential methylations were associated with cardiac, renal, hepatic, neurological diseases, developmental and immunological disorders. Conclusions: COVID-19 induces differential DNA methylation in umbilical cord blood cells. The differentially methylated genes may contribute to hepatic, renal, cardiac, developmental and immunological disorders in offspring born to mothers with COVID-19 infection during pregnancy, and their developmental regulation.

15.
Dermatol Surg ; 38(1): 14-9, 2012 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-22093284

RESUMEN

BACKGROUND: Punch grafting is a well-established treatment for vitiligo, but predictive factors for outcomes are not well established. OBJECTIVE: To determine the characteristics of responses to punch grafting performed in patients with vitiligo. METHODS AND MATERIALS: Retrospective, single-center chart review. Response rates were assessed using photographs taken before and after grafting using a 1.5-mm punch instrument. Effectiveness of repigmentation was assessed using the following scale: worse, no improvement, 0% to 25% improvement, 25% to 50% improvement, 50% to 75% improvement, and 75% to 100% improvement. Repigmentation rates were correlated with patient demographics. RESULTS: Thirty-seven charts were reviewed, from which data were available from 30 patients. The total number grafts was 606 in 44 transplanted areas; 87% (530/606) of the transplants survived, and 26 of the 30 (87%) patients achieved some degree of repigmentation. Patients younger than 20 achieved the greatest average improvement in repigmentation (mean 61%), whereas those aged 60 and older showed the least improvement (mean 38%). Punch grafting of the neck and trunk achieved the greatest repigmentation, with 65% and 63% average improvement, respectively. Acral sites and skin overlying joints improved the least. CONCLUSION: Punch grafting is successful in most patients with vitiligo, with an 87% graft survival rate, but the rates of repigmentation vary depending on clinical characteristics.


Asunto(s)
Vitíligo/cirugía , Adulto , Epidermis/trasplante , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Trasplante de Piel , Trasplante Autólogo , Adulto Joven
16.
Am J Clin Pathol ; 158(3): 378-382, 2022 09 02.
Artículo en Inglés | MEDLINE | ID: mdl-35568991

RESUMEN

OBJECTIVES: Specimen adequacy is an important quality assurance component of a cervical Papanicolaou test. Although consensus exists on minimal acceptable cellularity for cervical Papanicolaou tests, no such criteria exist for endocervical curettage (ECC) specimens. We sought to identify minimum acceptable cellularity for accurate diagnosis of high-grade dysplasia (HGD) on ECC. METHODS: All patients with HGD diagnosed in a loop electrosurgical excision procedure (LEEP) from May 8, 2018, to December 18, 2019, and an ECC in the preceding 6 months at our institution were included (n = 51). All ECCs performed before the LEEP were evaluated for cellularity of squamous cells using Aperio eSlide Manager (Leica Biosystems). Biopsy results concurrent with the ECC were noted. We compared the number of squamous cells in positive and negative ECC specimens using a t-test. The proportion of ECC specimens and concurrent biopsies undergoing immunohistochemical (IHC) staining for p16 were compared using the χ2 test. P < .05 was considered significant. RESULTS: Endocervical curettage specimens positive for HGD have increased cellularity compared with negative ECC specimens (mean cellularity, 10,165 vs 1,055; P < .05). Further, IHC staining for p16 was more likely to be performed on an ECC specimen positive for HGD than on a negative ECC specimen (50% vs 3%; P < .05). Biopsies performed concurrently with a negative ECC finding were more likely to undergo p16 IHC than biopsies performed concurrently with a positive ECC finding (51% vs 7%; P < .05). Finally, we observed no difference in the proportion of biopsies undergoing IHC staining for p16 when comparing biopsies positive for HGD with negative biopsies (37% vs 46%; P = .33). CONCLUSIONS: We find cellularity of approximately 10,000 cells adequate to diagnose HGD in an ECC specimen and cellularity of approximately 1,000 cells to be inadequate. Further, we find p16 IHC commonly used as a "rule-in" test on ECC specimens at our institution. Biopsies accompanying an ECC specimen negative for HGD are more likely to undergo p16 IHC than those accompanying an ECC specimen positive for HGD, but there is no difference in the proportion of biopsies undergoing p16 IHC when comparing positive and negative results in the biopsies themselves. These findings further support the need for adequate cellularity for diagnosis in ECC, especially when a biopsy is technically difficult. Further areas for exploration include investigating laboratory procedures to maximize the cellularity of ECC specimens.


Asunto(s)
Neoplasias del Cuello Uterino , Biopsia/métodos , Cuello del Útero/patología , Cuello del Útero/cirugía , Colposcopía/métodos , Legrado/métodos , Femenino , Humanos , Embarazo , Neoplasias del Cuello Uterino/diagnóstico , Neoplasias del Cuello Uterino/patología , Neoplasias del Cuello Uterino/cirugía , Frotis Vaginal
17.
J Thromb Haemost ; 20(10): 2419-2428, 2022 10.
Artículo en Inglés | MEDLINE | ID: mdl-35815338

RESUMEN

BACKGROUND: Platelet protease activated receptor-4 (PAR4) Thr120 is a common genetic variant associated with increased platelet activity. Increased platelet activity is implicated in the pathogenesis of preeclampsia and preterm birth. OBJECTIVE: Compare the rate of preeclampsia and preterm birth in pregnant individuals homozygous for PAR4 Thr120 variant vs not. STUDY DESIGN: This is a prospective cohort study of patients who delivered November 2020-July 2021. Maternal blood collected on admission for PAR4 genotyping. The primary outcome was the rate of preeclampsia/gestational hypertension in those with Thr/Thr genotype compared with Ala/Thr or Ala/Ala. Secondary outcomes included rates of preterm birth and placental pathology. RESULTS: Three hundred and twenty singletons were included and 52 (16.3%) were PAR4 Thr/Thr. Those PAR4 Thr/Thr were more likely to be Black (67.3% vs 29.5%, p < .001), younger (28 ± 6 vs 31 ± 6, p = .004), and have higher body mass index (35.2 ± 6.8 vs 33.1 ± 7.4, p = .047). There was no difference in preeclampsia/gestational hypertension (19.2% vs 22.8%, p = .705). Those Thr/Thr had a significantly higher rate of preterm birth (15.4% vs 3.7%, adjusted odds ratio [aOR] 4.04 [1.47-11.10], p = .007), indicated preterm birth because of fetal growth restriction or preeclampsia (5.8% vs 0.4%, aOR 10.03 [1.48-67.87], p = .02), spontaneous preterm birth (7.7% vs 2.2%, aOR 4.81 [1.27-18.27], p = .02), and placental intervillous thrombosis (18.5% vs 7.9%, aOR 4.12 [1.14-14.92], p = .03). CONCLUSION: Platelet receptor PAR4 Thr120 is a common variant associated with an increased risk of placental vascular pathology and preterm birth in homozygous individuals. Although a cohort study cannot establish causation, this strong association warrants further exploration.


Asunto(s)
Hipertensión Inducida en el Embarazo , Preeclampsia , Nacimiento Prematuro , Estudios de Cohortes , Femenino , Genotipo , Humanos , Hipertensión Inducida en el Embarazo/diagnóstico , Hipertensión Inducida en el Embarazo/epidemiología , Hipertensión Inducida en el Embarazo/genética , Recién Nacido , Placenta , Preeclampsia/diagnóstico , Preeclampsia/genética , Embarazo , Nacimiento Prematuro/genética , Estudios Prospectivos
18.
Front Pediatr ; 10: 834771, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35547542

RESUMEN

Background: The COVID-19 pandemic continues worldwide with fluctuating case numbers in the United States. This pandemic has affected every segment of the population with more recent hospitalizations in the pediatric population. Vertical transmission of COVID-19 is uncommon, but reports show that there are thrombotic, vascular, and inflammatory changes in the placenta to which neonates are prenatally exposed. Individuals exposed in utero to influenza during the 1918 pandemic had increased risk for heart disease, kidney disease, diabetes, stomach disease and hypertension. Early exposure of COVID-19 during fetal life may lead to altered gene expression with potential long-term consequences. Objective: To determine if gene expression is altered in cord blood cells from term neonates who were exposed to COVID-19 during pregnancy and to identify potential gene pathways impacted by maternal COVID-19. Methods: Cord blood was collected from 16 term neonates (8 exposed to COVID-19 during pregnancy and 8 controls without exposure to COVID-19). Genome-wide gene expression screening was performed using Human Clariom S gene chips on total RNA extracted from cord blood cells. Results: We identified 510 differentially expressed genes (374 genes up-regulated, 136 genes down-regulated, fold change ≥1.5, p-value ≤ 0.05) in cord blood cells associated with exposure to COVID-19 during pregnancy. Ingenuity Pathway Analysis identified important canonical pathways associated with diseases such as cardiovascular disease, hematological disease, embryonic cancer and cellular development. Tox functions related to cardiotoxicity, hepatotoxicity and nephrotoxicity were also altered after exposure to COVID-19 during pregnancy. Conclusions: Exposure to COVID-19 during pregnancy induces differential gene expression in cord blood cells. The differentially expressed genes may potentially contribute to cardiac, hepatic, renal and immunological disorders in offspring exposed to COVID-19 during pregnancy. These findings lead to a further understanding of the effects of COVID-19 exposure at an early stage of life and its potential long-term consequences as well as therapeutic targets.

19.
Dermatol Ther ; 24(1): 108-20, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-21276163

RESUMEN

Facial rejuvenation using local anesthesia has evolved in the past decade as a safer option for patients seeking fewer complications and minimal downtime. Mini- and short-scar face lifts using more conservative incision lengths and extent of undermining can be effective in the younger patient with lower face laxity and minimal loose, elastotic neck skin. By incorporating both an anterior and posterior approach and using an incision length between the mini and more traditional face lift, the Vertical Vector Face Lift can achieve longer-lasting and natural results with lesser cost and risk. Submentoplasty and liposuction of the neck and jawline, fundamental components of the vertical vector face lift, act synergistically with superficial musculoaponeurotic system plication to reestablish a more youthful, sculpted cervicomental angle, even in patients with prominent jowls. Dramatic results can be achieved in the right patient by combining with other procedures such as injectable fillers, chin implants, laser resurfacing, or upper and lower blepharoplasties.


Asunto(s)
Cara/anatomía & histología , Rejuvenecimiento , Ritidoplastia/métodos , Adulto , Anciano , Anciano de 80 o más Años , Anestesia Local , Técnicas Cosméticas , Femenino , Humanos , Masculino , Persona de Mediana Edad , Satisfacción del Paciente , Selección de Paciente , Resultado del Tratamiento
20.
Dermatol Online J ; 17(5): 5, 2011 May 15.
Artículo en Inglés | MEDLINE | ID: mdl-21635827

RESUMEN

Cutaneous fusariosis is an opportunistic mycosis in immunocompromised patients. We present a novel variation of an immunocompromised patient who developed fusariosis in a previously irradiated site. Irradiation led to atrophy, contraction, fibrosis, barrier disruption, and an altered dermal environment in which the infection developed. Significantly, this is the first case report of fusariosis in a previously irradiated site of an immunocompromised patient. Treatment included debridement and voriconazole.


Asunto(s)
Dermatomicosis/etiología , Fusarium/aislamiento & purificación , Úlcera de la Pierna/etiología , Infecciones Oportunistas/etiología , Radiodermatitis/complicaciones , Radioterapia/efectos adversos , Adulto , Terapia Combinada , Ciclosporina/efectos adversos , Ciclosporina/uso terapéutico , Desbridamiento , Dermatomicosis/tratamiento farmacológico , Dermatomicosis/microbiología , Dermatomicosis/cirugía , Femenino , Humanos , Huésped Inmunocomprometido , Inmunosupresores/efectos adversos , Trasplante de Riñón , Úlcera de la Pierna/tratamiento farmacológico , Úlcera de la Pierna/microbiología , Úlcera de la Pierna/cirugía , Linfoma no Hodgkin/radioterapia , Infecciones Oportunistas/tratamiento farmacológico , Infecciones Oportunistas/microbiología , Infecciones Oportunistas/cirugía , Complicaciones Posoperatorias/etiología , Complicaciones Posoperatorias/microbiología , Prednisona/efectos adversos , Prednisona/uso terapéutico , Pirimidinas/uso terapéutico , Neoplasias Cutáneas/radioterapia , Triazoles/uso terapéutico , Voriconazol
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