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1.
Mod Pathol ; 36(9): 100246, 2023 09.
Artículo en Inglés | MEDLINE | ID: mdl-37307874

RESUMEN

Lipoblastoma-like tumor (LLT) is a benign soft tissue tumor demonstrating mixed morphologic features of lipoblastoma, myxoid liposarcoma, and spindle cell lipoma but lacking genetic alterations associated with those tumors. LLT was originally thought to be specific to the vulva but has since been reported in the paratesticular region. The morphologic features of LLT overlap with those of "fibrosarcoma-like lipomatous neoplasm" (FLLN), a rare, indolent adipocytic neoplasm considered by some to form part of the spectrum of atypical spindle cell and pleomorphic lipomatous tumor. We compared the morphologic, immunohistochemical, and genetic features of 23 tumors previously classified as LLT (n = 17) and FLLN (n = 6). The 23 tumors occurred in 13 women and 10 men (mean age, 42 years; range, 17 to 80 years). Eighteen (78%) cases arose in the inguinogenital region, whereas 5 tumors (22%) involved noninguinogenital soft tissue, including the flank (n = 1), shoulder (n = 1), foot (n = 1), forearm (n = 1), and chest wall (n = 1). Microscopically, the tumors were lobulated and septated, with variably collagenized fibromyxoid stroma, prominent thin-walled vessels, scattered univacuolated or bivacuolated lipoblasts, and a minor component of mature adipose tissue. Using immunohistochemistry, 5 tumors (42%) showed complete RB1 loss, with partial loss in 7 cases (58%). RNA sequencing, chromosomal microarray, and DNA next-generation sequencing study results were negative for significant alterations. There were no clinical, morphologic, immunohistochemical, or molecular genetic differences between cases previously classified as LLT or FLLN. Clinical follow-up (11 patients [48%]; range, 2-276 months; mean, 48.2 months) showed all patients were alive without disease, and only one patient had experienced a single local recurrence. We conclude that LLT and FLLN represent the same entity, for which "LLT" seems most appropriate. LLT may occur in either sex and any superficial soft tissue location. Careful morphologic study and appropriate ancillary testing should allow for the distinction of LLT from its potential mimics.


Asunto(s)
Fibrosarcoma , Lipoblastoma , Lipoma , Liposarcoma Mixoide , Liposarcoma , Masculino , Adulto , Humanos , Femenino , Lipoblastoma/genética , Biomarcadores de Tumor/genética , Lipoma/genética , Lipoma/patología , Liposarcoma/genética , Biología Molecular
2.
Ann Diagn Pathol ; 63: 152103, 2023 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-36640642

RESUMEN

We correlate the fine needle aspiration (FNA) cytologic findings with the histologic features of an invasive high-grade urothelial carcinoma showing squamous differentiation in the setting of high-risk Human Papilloma Virus (hrHPV) infection. To our knowledge, only extensive urinary bladder catheterization has been associated with hrHPV-positive urothelial carcinoma with squamous differentiation, and rarely at that. Herein, we present a case arising in a patient with only sparse and intermittent catheterization. A 69-year-old woman presented with voiding difficulties, and after continued symptoms, a Foley catheter was placed, and a cystoscopy procedure revealed two 1-2 cm inflammatory masses. Excisional biopsies were interpreted as papillary urothelial carcinoma. One month follow-up pelvic imaging demonstrated a new mass involving the urinary bladder neck, with irregular wall thickening and perivesical fat stranding, as well as probable vaginal involvement. CT-guided FNA (CT-FNA) to collect smears and core biopsies revealed an invasive urothelial carcinoma with squamous differentiation. HPV-cytopathic changes amid squamous metaplasia and dysplasia were noted on FNA smears with HPV E6/E7 RNA in situ hybridization (ISH) showing on the FNA core biopsy specimen. Immunostains showed that the tumor cells were positive for P16 (strong, diffuse), CK7, p63, ER, and GATA3 (patchy). Subsequent radical cystectomy revealed the extent of the patient's carcinoma, with direct extension to the vaginal wall, and involvement of the radial soft tissue resection margins. Describing the cytomorphologic features of a hrHPV positive urothelial carcinoma with squamous differentiation, without an extensive history of urinary catheterization or prior known history of HPV infection, emphasizes the role of cytopathology as a powerful diagnostic tool for recognizing a unique and unexpected lesion.


Asunto(s)
Carcinoma de Células Escamosas , Carcinoma de Células Transicionales , Infecciones por Papillomavirus , Neoplasias de la Vejiga Urinaria , Femenino , Humanos , Anciano , Carcinoma de Células Transicionales/patología , Neoplasias de la Vejiga Urinaria/patología , Virus del Papiloma Humano , Carcinoma de Células Escamosas/patología , Infecciones por Papillomavirus/diagnóstico , Biopsia con Aguja Fina , Diferenciación Celular
3.
Emerg Infect Dis ; 28(11): 2281-2284, 2022 11.
Artículo en Inglés | MEDLINE | ID: mdl-36286008

RESUMEN

We report an imported case of myositis caused by a rare parasite, Haycocknema perplexum, in Australia in a 37-year-old man who had progressive facial, axial, and limb weakness, dysphagia, dysphonia, increased levels of creatine kinase and hepatic aminotransferases, and peripheral eosinophilia for 8 years. He was given extended, high-dose albendazole.


Asunto(s)
Miositis , Nematodos , Animales , Masculino , Humanos , Estados Unidos , Adulto , Albendazol , Miositis/parasitología , Creatina Quinasa , Transaminasas
4.
Ann Diagn Pathol ; 58: 151906, 2022 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-35151197

RESUMEN

Biphasic squamoid alveolar renal cell carcinoma is a newly described rare morphologic variant of papillary renal cell carcinoma. Its characteristic histomorphology and immunophenotype have been well described in the literature. Namely, BSARCC is composed of a dual-cell population with nests of larger squamoid cells surrounded by a single layer of cuboidal cells in alveolar arrangements. Invariably, the squamoid component expresses cyclin D1. More recently, MET alterations have been identified within a subset of BSARCC, raising the possibility for targeted MET inhibitor therapy. To the best of our knowledge the cytomorphologic features of BSARCC have yet to be described. Herein we correlate the cytologic features (percutaneous image-guided fine needle aspiration) of BSARCC to its corresponding histomorphology and immunophenotype (core needle biopsy).


Asunto(s)
Carcinoma de Células Renales , Neoplasias Renales , Biomarcadores de Tumor/análisis , Biopsia con Aguja Gruesa , Carcinoma de Células Renales/patología , Humanos , Riñón/patología , Neoplasias Renales/patología
5.
Prenat Diagn ; 41(9): 1057-1065, 2021 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-34176153

RESUMEN

OBJECTIVE: Expanded carrier screening (ECS) assesses the risk of individuals and couples of having a child affected with a set of genetic conditions. Carriers have options available to optimize pregnancy outcomes based on personal values and preferences. The greatest range of options is available prior to pregnancy, therefore professional societies recommend this screening be performed preconception. This study aimed to assess awareness of, and interest in, ECS in women preconception. Additionally, it aimed to evaluate preferences for timing and location of education and availability of ECS. METHODS: A total of 260 nulliparous women from the general population were surveyed through Qualtrics, a national market research survey platform. Data were delineated using descriptive statistics. RESULTS: Of this cohort, 43.5% reported being aware of ECS prior to the survey and 77.8% indicated interest. Those previously aware were first informed by family, friends, or independent online research. Interest was primarily driven by a desire for reassurance and to make informed decisions about future pregnancies. Interested respondents indicated a willingness to request testing from providers. Participants showed a preference for education and access from a healthcare provider in person. CONCLUSION: These findings provide insight regarding when and where to best educate and reach women prior to pregnancy about ECS to maximize pregnancy outcomes.


Asunto(s)
Tamización de Portadores Genéticos/normas , Opinión Pública , Tamización de Portadores Genéticos/métodos , Tamización de Portadores Genéticos/tendencias , Humanos , Atención Preconceptiva/métodos , Atención Preconceptiva/normas , Atención Preconceptiva/tendencias , Medición de Riesgo/métodos , Encuestas y Cuestionarios
6.
Pituitary ; 24(2): 192-206, 2021 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-33074402

RESUMEN

PURPOSE: Growth hormone-producing pituitary adenomas are divided into two clinically relevant histologic subtypes, densely (DG-A) and sparsely (SG-A) granulated. Histologic subtype was evaluated in a large cohort of patients with acromegaly, separating DG-A and SG-A, and correlated with clinicopathological characteristics. METHODS: Patients with acromegaly undergoing surgery as initial therapy between 1995 and 2015 were identified. Histologic subtype was determined by keratin expression pattern with CAM5.2 and correlated with clinical and imaging parameters, somatostatin receptor subtype 2 (SST2) expression, post-surgical remission rate, and application of a prognostic scoring system incorporating proliferation and invasiveness. RESULTS: One hundred thirty-one patients were included. Tumors were classified as DG-A (75, 57.3%), SG-A (29, 22.1%), intermediate (I-A) (9, 6.9%), and unclassified (18, 13.7%) when CAM5.2 was negative. DG-A and I-A were combined for analysis (DG/I-A) and compared to SG-A. Age, gender, proliferation, and post-surgical remission did not differ. SG-A were larger [2 vs. 1.5 cm (median), p = 0.03], more frequently invasive [65.5% vs. 32.9%, p = 0.004], associated with higher MRI T2-weighted signal ratio [1.01 vs. 0.82 (median), p = 0.01], showed lower SST2 expression (p < 0.0001), and scored higher in the prognostic classification (p = 0.004). Surgical remission occurred in 41.7% DG/I-A and 41.4% SG-A (p = 1.0). On multivariate analysis, absence of invasion (p = 0.009) and lower pre-operative IGF-1 index (p = 0.0002) were associated with post-surgical remission. CONCLUSION: CAM5.2 allowed distinction between DG/I-A and SG-A in most but not all cases. Histologic subtype did not predict surgical outcome. Absence of invasion and lower pre-operative IGF-1 index were the only significant predictors of post-surgical remission in this cohort.


Asunto(s)
Acromegalia/metabolismo , Acromegalia/patología , Biomarcadores/metabolismo , Adenoma Hipofisario Secretor de Hormona del Crecimiento/metabolismo , Adenoma Hipofisario Secretor de Hormona del Crecimiento/patología , Queratinas/metabolismo , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Niño , Estudios de Cohortes , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven
7.
Sensors (Basel) ; 21(2)2021 Jan 07.
Artículo en Inglés | MEDLINE | ID: mdl-33430371

RESUMEN

Autism Spectrum Disorder (ASD) impacts 1 in 54 children in the US. Two-thirds of children with ASD display problem behavior. If a caregiver can predict that a child is likely to engage in problem behavior, they may be able to take action to minimize that risk. Although experts in Applied Behavior Analysis can offer caregivers recognition and remediation strategies, there are limitations to the extent to which human prediction of problem behavior is possible without the assistance of technology. In this paper, we propose a machine learning-based predictive framework, PreMAC, that uses multimodal signals from precursors of problem behaviors to alert caregivers of impending problem behavior for children with ASD. A multimodal data capture platform, M2P3, was designed to collect multimodal training data for PreMAC. The development of PreMAC integrated a rapid functional analysis, the interview-informed synthesized contingency analysis (IISCA), for collection of training data. A feasibility study with seven 4 to 15-year-old children with ASD was conducted to investigate the tolerability and feasibility of the M2P3 platform and the accuracy of PreMAC. Results indicate that the M2P3 platform was well tolerated by the children and PreMAC could predict precursors of problem behaviors with high prediction accuracies.


Asunto(s)
Trastorno del Espectro Autista , Problema de Conducta , Trastorno del Espectro Autista/diagnóstico , Cuidadores , Niño , Estudios de Factibilidad , Humanos , Aprendizaje Automático
8.
Am J Forensic Med Pathol ; 41(4): 331-332, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-32732592

RESUMEN

We present a case report of a 25 year-old man with MELAS (Mitochondrial Encephalopathy, Lactic Acidosis, and Stroke-like episodes) syndrome, who died suddenly and unexpectedly from diabetic ketoacidosis. This case report illustrates why it is important for medical examiners to be familiar with the clinical and autopsy features of MELAS syndrome and to be aware of the common complications, which may lead to sudden unexpected death.


Asunto(s)
Muerte Súbita/etiología , Cetoacidosis Diabética/etiología , Síndrome MELAS/complicaciones , Ácido 3-Hidroxibutírico/metabolismo , Acetona/sangre , Adulto , Encéfalo/patología , Cetoacidosis Diabética/diagnóstico , Glucosa/metabolismo , Humanos , Masculino , Cuerpo Vítreo/metabolismo
9.
J Genet Couns ; 28(4): 869-877, 2019 08.
Artículo en Inglés | MEDLINE | ID: mdl-31058406

RESUMEN

Genetic counseling careers continue to evolve, yet there remains a lack of information about hiring trends in the genetic counseling profession. In this study, job advertisements in the United States and Canada were analyzed, using the National Society of Genetic Counselors (NSGC) Job Connections and the American Board of Genetic Counseling (ABGC) eBlasts from 2014 to 2016 to appraise job roles, qualifications, settings, specialties, and type. NSGC had 1875 advertised openings from 2014 to 2016, while ABGC had 373 advertised openings. Jobs containing a "counseling" role increased as a percentage from 2014 to 2016 when advertised by NSGC (χ2  = 25.52, p < 0.000001) but decreased each year from 2014 to 2016 as a percentage when advertised through ABGC (χ2  = 14.29, p = 0.0008). In the ABGC job postings, it was noted that 36% of job postings were advertised for other specialties (not solely cancer, pediatric, or prenatal) in 2014, and increased to 67% in 2016 (χ2  = 10.09, p = 0.02). Examining the job specialties posted by ABGC and NSGC, several new or unique roles were found in the job advertisements such as ophthalmology counselor, variant curator, rare diseases information specialist, and clinical policy analyst. Roles for temporary, contract or fellowship positions are possibly becoming more common, along with small upturns in positions that are off-site or remote. In analyzing the changing workforce, there was a statistically significant decrease identified in jobs advertised by NSGC in the laboratory setting from 28% in 2014 to 17% in 2016 (χ2  = 24.12, p = 0.000024). This information on the evolving career of genetic counseling is valuable for the current workforce and training programs as they adapt with the changing landscape of the profession.


Asunto(s)
Publicidad , Asesoramiento Genético , Selección de Personal , Canadá , Consejeros , Humanos , Estudios Retrospectivos , Estados Unidos , Recursos Humanos
10.
Am J Med Genet C Semin Med Genet ; 178(1): 63-67, 2018 03.
Artículo en Inglés | MEDLINE | ID: mdl-29575585

RESUMEN

Trying to predict what genetic counseling will look like in the era of precision medicine is a continuous challenge. According to the National Institutes of Health, precision medicine is an emerging approach for disease treatment and prevention that takes into account individual variability in genes, environment, and lifestyle. In order to explore the future of genetic counseling practice in this era, this article examines the current genetic counseling practice, internal and external forces that most likely will continue to shape the genetic counseling profession, and discusses the most important aspects of what genetic counselors have to offer in the era of precision medicine.


Asunto(s)
Consejeros , Asesoramiento Genético/métodos , Medicina de Precisión , Asesoramiento Genético/psicología , Pruebas Genéticas , Personal de Salud , Humanos
11.
Neuropathology ; 38(3): 309-314, 2018 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-29314300

RESUMEN

We report a case of low-grade fibromyxoid sarcoma arising within the median nerve. A 31-year-old woman presented with symptoms of carpal tunnel syndrome and an enlarging mass in her right palm over 1 year. MRI demonstrated a mass associated with the right median nerve with solid and cystic components. At surgery, the mass was located within the epineurium, could be bluntly dissected from the nerve fascicles, and was suspected to be a schwannoma. A 3.4 cm, tan-pink, glistening, smooth, homogenous mass was submitted to pathology. Microscopically, the tumor was a solid and cystic circumscribed nodule with a dense fibrous pseudocapsule. The tumor cells were uniformly bland and spindle-shaped, with small, hyperchromatic oval nuclei and were embedded in an alternating fibrous and myxoid stroma with a prominent curvilinear vasculature and perivascular sclerosis. The differential diagnosis for this lesion included myxoid neurofibroma, schwannoma, soft tissue perineurioma, low-grade malignant peripheral nerve sheath tumor and low-grade fibromyxoid sarcoma. The tumor cells expressed MUC4, GLUT-1, and vimentin and were negative for S-100 protein, epithelial membrane antigen, smooth muscle actin, desmin, claudin-1, neurofilament and SOX10. Fluorescence in situ hybridization, with a break-apart probe strategy, demonstrated FUS rearrangement, consistent in this morphological context with the low-grade fibromyxoid sarcoma-associated FUS-CREB3L2 or FUS-CREB3L1 fusions. Low-grade fibromyxoid sarcoma is exceptionally rare in the peripheral nerve, with only a single previously reported case. Nonetheless, as our case illustrates, this entity must be included in the differential diagnosis of unusual intraneural mesenchymal tumors. As in all other locations, intraneural low-grade fibromyxoid sarcomas should be excised with negative margins. Patients with this disease require long-term clinical follow-up, given this tumor's propensity for very late distant metastases to the lungs and other sites.


Asunto(s)
Fibrosarcoma/patología , Neuropatía Mediana/patología , Neoplasias de los Tejidos Blandos/patología , Adulto , Diagnóstico Diferencial , Femenino , Fibrosarcoma/complicaciones , Humanos , Neuropatía Mediana/complicaciones , Neoplasias de la Vaina del Nervio/complicaciones , Neoplasias de la Vaina del Nervio/patología , Neoplasias de los Tejidos Blandos/complicaciones
15.
Aust N Z J Obstet Gynaecol ; 56(2): 142-7, 2016 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-26840745

RESUMEN

BACKGROUND: Obstetrics remains the largest medico-legal liability in healthcare. Neither an increasing awareness of patient safety nor a long tradition of reporting obstetric outcomes have reduced either rates of medical error or obstetric litigation. International debate continues about the best approaches to measuring and improving patient safety. In this study, we set out to assess the feasibility and utility of measuring the process of maternity care provision rather than care outcomes. AIMS: To report the development, application and results of a tool designed to measure the process of maternity care. MATERIALS AND METHODS: A dedicated audit tool was developed, informed by local, national and international standards guiding best practice and then applied to a convenience sample of individual healthcare records as proof of function. Omissions of care were rated in order of severity (low, medium or high) based on the likelihood of serious consequences on patient safety and outcome. RESULTS: The rate of high severity omissions of care was less that 2%. However, overall rates of all omissions varied from 0 to 99%, highlighting key areas for clinical practice improvement. CONCLUSIONS: Measuring process of care provision, rather than pregnancy outcomes, is feasible and insightful, effectively identifying gaps in care provision and affording opportunities for targeted care improvement. This approach to improving patient safety, and potentially reducing litigation burden, promises to be a useful adjunct to the measurement of outcomes.


Asunto(s)
Errores Médicos/prevención & control , Seguridad del Paciente , Complicaciones del Embarazo/diagnóstico , Atención Prenatal/normas , Evaluación de Procesos, Atención de Salud , Adolescente , Adulto , Documentación/normas , Femenino , Humanos , Salud del Lactante , Salud Materna , Auditoría Médica , Guías de Práctica Clínica como Asunto , Embarazo , Evaluación de Procesos, Atención de Salud/métodos , Adulto Joven
16.
J Genet Couns ; 23(4): 647-54, 2014 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-24435697

RESUMEN

Next generation sequencing (NGS) is dramatically increasing the number of clinically available genetic tests and thus the number of patients in which such testing may be indicated. The complex nature and volume of the reported results requires professional interpretation of the testing in order to translate and synthesize the meaning and potential benefit to patients, and genetic counselors are uniquely suited to provide this service. The increased need for genetic counselors in this role, coupled with the time required and a limited number of trained and available counselors presents a challenge to current models for making genetic testing available to patients and their healthcare providers effectively and efficiently. The employment of genetic counselors at genetic/genomic laboratories is one model to expand the resources for providing this service. In this article, we briefly review the advent of NGS and its clinical applications, examine the core skills of genetic counselors and delineate the expanding roles and responsibilities of laboratory-based genetic counselors. We also propose changes to the genetic counseling training program curriculum to account for the increasing opportunities for genetic counselors to contribute and thrive within genetic testing laboratories.


Asunto(s)
Asesoramiento Genético , Análisis de Secuencia/métodos , Competencia Clínica , Humanos , Recursos Humanos
17.
J Am Soc Cytopathol ; 13(1): 10-15, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-37865567

RESUMEN

There are few medical success stories in history as significant as the reduction in cervical cancer incidence. Through the collaborative efforts of dedicated scientific pioneers, the past century has witnessed remarkable advancement that began with the detection of exfoliated cancer cells through cytologic examination to widespread implementation of cervical cancer screening programs to the discovery of the link between cervical cancer and human papillomavirus (HPV). Current screening methods apply HPV-based testing, and artificial intelligence-based screening systems utilizing digitalized cytology images are being used in a continuous effort to optimize the accuracy and efficiency of the Papanicolaou test. This review summarizes the major milestones in cervical cancer screening history to emphasize its evolution as the World Health Organization aims for the global elimination of cervical cancer.


Asunto(s)
Infecciones por Papillomavirus , Neoplasias del Cuello Uterino , Femenino , Humanos , Frotis Vaginal , Detección Precoz del Cáncer/métodos , Inteligencia Artificial , Papillomaviridae/genética
18.
Artículo en Inglés | MEDLINE | ID: mdl-38189791

RESUMEN

Summary: We report the case of a male patient with papillary thyroid cancer, familial thoracic aortic aneurysm and dissection, and a variation in the MYH11 gene. Because of considerable tumor bulk in the neck that was not resectable, the patient underwent partial resection at age 14 years. Since then, the patient has received only suppressive thyroid hormone therapy. He is now 71 years old, which is 57 years after the initial resection. The patient received care at our institution from July 2009 to August 2019, during which we documented the stability of multiple calcified masses in the neck. Follow-up examinations at another institution from September 2019 to April 2023 also confirmed the stability of the masses. The underlying cause of this unusually long indolent course of the disease is unclear. Whether extensive tumor calcifications or the MYH11 sequence variation contributed to the disease course is also uncertain. Learning points: Papillary thyroid cancer with neck metastases may, in some cases, be stable and remain asymptomatic for decades. If locoregional stability of papillary thyroid cancer is documented for many years, observation may be preferable to extensive neck surgery in selected cases. This is the first report of an MYH11 gene alteration and thoracic aortic aneurysm in a patient with papillary thyroid cancer with indolent neck metastases. Future studies of MYH11 gene alterations in thyroid carcinoma are needed.

19.
Assist Technol ; 36(1): 22-39, 2024 01 02.
Artículo en Inglés | MEDLINE | ID: mdl-37000014

RESUMEN

Autistic individuals face difficulties in finding and maintaining employment, and studies have shown that the job interview is often a significant barrier to obtaining employment. Prior computer-based job interview training interventions for autistic individuals have been associated with better interview outcomes. These previous interventions, however, do not leverage the use of multimodal data that could give insight into the emotional underpinnings of autistic individuals' challenges in job interviews. In this article, the authors present the design of a novel multimodal job interview training platform called CIRVR that simulates job interviews through spoken interaction and collects eye gaze, facial expressions, and physiological responses of the participants to understand their stress response and their affective state. Results from a feasibility study with 23 autistic participants who interacted with CIRVR are presented. In addition, qualitative feedback was gathered from stakeholders on visualizations of data on CIRVR's visualization tool called the Dashboard. The data gathered indicate the potential of CIRVR along with the Dashboard to be used in the creation of individualized job interview training of autistic individuals.


Asunto(s)
Trastorno Autístico , Humanos , Empleo/psicología
20.
Hum Pathol ; 143: 24-32, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-38000678

RESUMEN

Leiomyosarcoma with adipocytic differentiation or lipoleiomyosarcoma is an uncommon sarcoma of the female genital tract with only a few individual reports in the literature. We therefore performed a morphologic, immunohistochemical, MDM2 gene amplification and RNA and DNA sequencing analysis of a series of gynecologic lipoleiomyosarcoma to better define the clinicopathologic spectrum. Six tumors from 6 patients were identified and classified as spindled lipoleiomyosarcoma (n = 2), mixed spindled and myxoid lipoleiomyosarcoma (n = 1), epithelioid lipoleiomyosarcoma with focal myxoid features (n = 1) and mixed spindled and epithelioid lipoleiomyosarcoma (n = 2). Patient age ranged from 41 to 64 years (mean: 49; median: 50). Primary location included uterine corpus (3), uterine corpus/cervix (2) and broad ligament (1). Tumor size ranged from 4.5 to 22 cm (mean: 11.2; median: 9.8). Four patients had metastasis at presentation or subsequently developed recurrent or distant disease. Patient status was known for 5: 2 dead of disease, 2 alive with disease and 1 alive without evidence of disease. Immunohistochemical expression of smooth muscle markers, ER, PR and WT-1 showed patterns similar to non-adipocytic gynecologic leiomyosarcomas. MDM2 amplification fluorescence in situ hybridization performed on 2 tumors was negative in 1 and equivocal in 1. Sequencing studies performed on 3 tumors found TP53 mutations in 3, with 1 tumor also having an ATRX alteration. No gene fusions were identified. Although lipoleiomyosarcomas have a diverse morphologic spectrum, our findings suggest the smooth muscle component shares morphologic and immunohistochemical features with female genital tract non-adipocytic leiomyosarcomas. Lipoleiomyosarcomas also have genetic alterations associated with non-adipocytic gynecologic leiomyosarcomas.


Asunto(s)
Leiomiosarcoma , Tumor de Músculo Liso , Humanos , Femenino , Adulto , Persona de Mediana Edad , Leiomiosarcoma/patología , Tumor de Músculo Liso/patología , Hibridación Fluorescente in Situ , Biomarcadores de Tumor/genética , Biomarcadores de Tumor/análisis , Inmunohistoquímica , Genitales Femeninos/química , Genitales Femeninos/patología , Biología Molecular , Proteínas Proto-Oncogénicas c-mdm2/genética
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