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1.
Pediatr Dermatol ; 40(6): 1107-1111, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37202834

RESUMEN

We present a case of cutaneous granulomatous disease associated with rubella virus in a 4-year-old girl without an identifiable immunodeficiency. In this case, a combination of anti-inflammatory, anti-viral, and anti-neutrophil therapies successfully treated vision-threatening eyelid, conjunctival, scleral, and orbital inflammation.


Asunto(s)
Síndromes de Inmunodeficiencia , Enfermedades de la Piel , Femenino , Humanos , Preescolar , Virus de la Rubéola , Granuloma/tratamiento farmacológico , Enfermedades de la Piel/complicaciones , Párpados , Inflamación/complicaciones
2.
Ophthalmic Plast Reconstr Surg ; 39(6): 588-593, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37279012

RESUMEN

PURPOSE: The purpose of this study was to compare the histopathologic inflammation and fibrosis of orbital adipose tissue in orbital inflammatory disease (OID) specimens. METHODS: In this retrospective cohort study, inflammation, and fibrosis in orbital adipose tissue from patients with thyroid-associated orbitopathy (TAO), granulomatosis with polyangiitis (GPA), sarcoidosis, nonspecific orbital inflammation (NSOI), and healthy controls were scored by 2 masked ocular pathologists. Both categories were scored on a scale of 0 to 3 with scoring criteria based on the percentage of specimens containing inflammation or fibrosis, respectively. Tissue specimens were collected from oculoplastic surgeons at 8 international centers representing 4 countries. Seventy-four specimens were included: 25 with TAO, 6 with orbital GPA, 7 with orbital sarcoidosis, 24 with NSOI, and 12 healthy controls. RESULTS: The mean inflammation and fibrosis scores for healthy controls were 0.0 and 1.1, respectively. Orbital inflammatory disease groups' inflammation (I) and fibrosis (F) scores, formatted [I, F] with respective p -values when compared to controls, were: TAO [0.2, 1.4] ( p = 1, 1), GPA [1.9, 2.6] ( p = 0.003, 0.009), sarcoidosis [2.4, 1.9] ( p = 0.001, 0.023), and NSOI [1.3, 1.8] ( p ≤ 0.001, 0.018). Sarcoidosis had the highest mean inflammation score. The pairwise analysis demonstrated that sarcoidosis had a significantly higher mean inflammation score than NSOI ( p = 0.036) and TAO ( p < 0.0001), but no difference when compared to GPA. GPA had the highest mean fibrosis score, with pairwise analysis demonstrating a significantly higher mean fibrosis score than TAO ( p = 0.048). CONCLUSIONS: Mean inflammation and fibrosis scores in TAO orbital adipose tissue samples did not differ from healthy controls. In contrast, the more "intense" inflammatory diseases such as GPA, sarcoidosis, and NSOI did demonstrate higher histopathologic inflammation and fibrosis. This has implications in prognosis, therapeutic selection, and response monitoring in orbital inflammatory disease.


Asunto(s)
Oftalmopatía de Graves , Sarcoidosis , Humanos , Órbita/diagnóstico por imagen , Órbita/patología , Estudios Retrospectivos , Inflamación/patología , Oftalmopatía de Graves/patología , Fibrosis
3.
Orbit ; 42(6): 587-591, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-36530041

RESUMEN

PURPOSE: There have been many publications evaluating the visual outcomes of patients treated for orbital cellulitis. The aim of this study was to evaluate non-visual complications of post-septal orbital cellulitis (NVCOC) present 30 days after discharge from index hospitalization. METHODS: This was an IRB-approved, retrospective chart review. RESULTS: Ninety patients (45 pediatric, 45 adults) were identified with OC. NVCOC were significantly more common in adult patients as compared to children (40.0% vs 15.6% respectively; p < 0.05). The most common NVCOC among children was persistent ptosis, while clinically significant scarring was most common in adults. NVCOC were less persistent in children as compared to adults with 71.4% of complications in children resolving spontaneously by 6 month follow up as compared to 11.1% adults. (p < 0.05). The only statistically significant risk factor identified for the development of NVCOC in children and adults was the presence of ICE (intracranial extension) during index hospitalization (p < 0.05) and the presence of an infected orbital implant (p < 0.05) respectively. CONCLUSIONS: Adult patients experience NVCOC complications more often than children. Furthermore, the nonvisual complications in children are more likely to resolve spontaneously than those in adults. The intracranial spread of infection is a significant risk factor for late complications in children. The presence of an orbital wall/floor implant is a significant risk factor for late complications in adults. There are many differences in the etiology, pathophysiology, and course of NVCOC in children and adults, so information on these two populations should be reported separately.


Asunto(s)
Celulitis Orbitaria , Niño , Humanos , Adulto , Celulitis Orbitaria/diagnóstico por imagen , Celulitis Orbitaria/etiología , Estudios Retrospectivos , Antibacterianos/uso terapéutico , Factores de Riesgo , Celulitis (Flemón)/tratamiento farmacológico , Celulitis (Flemón)/etiología
4.
Orbit ; 42(1): 25-29, 2023 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-36696248

RESUMEN

PURPOSE: To describe the utilization of acellular cadaveric dermal matrix (ACDM) in patients undergoing orbital wall reconstruction after orbital preservation surgery for sinonasal malignancy. METHODS: Retrospective case series of seven patients with sinonasal malignancy who had orbital reconstruction with ACDM implants from January 2012 to August 2020. Orbital preservation was performed in all patients with tumor extension up to and including periorbital. The main outcome measures were implant exposure, orbital infection, diplopia in primary gaze, enophthalmos, and eyelid malposition. RESULTS: Patients ranged 37-78 years old (median: 66 years) and included 4 females and 3 males. The median follow-up time was 9 months (range 6-43 months) from the date of surgery. Squamous cell carcinoma comprised the majority of tumors with all patients needing medial wall reconstruction. Three patients received postoperative radiation therapy. No patients had any implant exposure, orbital infection, enophthalmos, or eyelid malposition. CONCLUSIONS: ACDM grafts can be used safely in orbital wall reconstruction in patients with sinonasal malignancies.


Asunto(s)
Carcinoma de Células Escamosas , Enoftalmia , Fracturas Orbitales , Implantes Orbitales , Masculino , Femenino , Humanos , Adulto , Persona de Mediana Edad , Anciano , Estudios Retrospectivos , Resultado del Tratamiento , Carcinoma de Células Escamosas/cirugía , Cadáver , Fracturas Orbitales/cirugía
5.
Breast Cancer Res Treat ; 192(1): 163-173, 2022 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-35022867

RESUMEN

PURPOSE: National comprehensive cancer network guidelines recommend delivery of adjuvant chemotherapy in node-negative triple-negative breast cancer (TNBC) if the tumor is > 1 cm and consideration of adjuvant chemotherapy for T1b but not T1a disease. These recommendations are based upon sparse data on the role of adjuvant chemotherapy in T1a and T1b node-negative TNBC. Our objective was to clarify the benefits of chemotherapy for patients with T1N0 TNBC, stratified by tumor size. METHODS: We performed a retrospective analysis of survival outcomes of TNBC patients at two academic institutions in the United States from 1999 to 2018. Primary tumor size, histology, and nodal status were based upon surgical pathology. The Kaplan-Meier plot and 5-year unadjusted survival probability were evaluated. RESULTS: Among 282 T1N0 TNBC cases, the status of adjuvant chemotherapy was known for 258. Mean follow-up was 5.3 years. Adjuvant chemotherapy was delivered to 30.5% of T1a, 64.7% T1b, and 83.9% T1c (p < 0.0001). On multivariable analysis, factors associated with delivery of adjuvant chemotherapy were tumor size and grade 3 disease. Improved overall survival was associated with use of chemotherapy in patients with T1c disease (93.2% vs. 75.2% p = 0.008) but not T1a (100% vs. 100% p = 0.3778) or T1b (100% vs. 95.8% p = 0.2362) disease. CONCLUSION: Our data support current guidelines indicating benefit from adjuvant chemotherapy in node-negative TNBC associated with T1c tumors but excellent outcomes were observed in the cases of T1a and T1b disease, regardless of whether adjuvant chemotherapy was delivered.


Asunto(s)
Neoplasias de la Mama , Neoplasias de la Mama Triple Negativas , Quimioterapia Adyuvante , Femenino , Humanos , Estadificación de Neoplasias , Estudios Retrospectivos , Neoplasias de la Mama Triple Negativas/tratamiento farmacológico , Neoplasias de la Mama Triple Negativas/patología
6.
Orbit ; 41(2): 204-210, 2022 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-33386062

RESUMEN

PURPOSE: To evaluate the predominant pathogens and clinical course in pediatric patients with orbital cellulitis (OC) complicated by subperiosteal abscess (SPA). METHODS: This is a single-center retrospective chart review evaluating pediatric patients with OC complicated by SPA treated at a tertiary care center in the Pacific Northwest. Data were analyzed for characteristics, rates of infection, and antibiotic resistance of the predominant pathogens in pediatric patients. RESULTS: Twenty-seven children were identified with OC complicated by SPA and bacterial cultures drawn. The average age (SD) of the patients was 9.2 years (4.8), median 9.6; 15 range 5 months to 17.2 years. Seventeen (63.0%) were male. Sinusitis was present in all patients. Streptococcus species were the most common pathogen accounting for 52% (17/33) of isolates. Streptococcus anginosus group (SAG) was the predominant species and were isolated in 10 out of 27 (37%) children in the study. Twenty-one (78%) patients required surgery for the treatment of SPA. Among surgically treated patients, females tended to be younger than males (p = .068). Pediatric patients with SAG infections required more surgery than children without this isolate, 100% and 65%, respectively (p = .030). Female patients tended to have SAG infections more often than males (p = .063). CONCLUSIONS: Orbital infections caused by SAG require surgical management more often than those caused by other pathogens. Our results suggest a difference in pathogenic organisms in male and female patients with SPA. SAG is one of the most common pathogens isolated in orbital cellulitis complicated by SPA in children.


Asunto(s)
Celulitis Orbitaria , Enfermedades Orbitales , Absceso/epidemiología , Absceso/etiología , Absceso/terapia , Antibacterianos/uso terapéutico , Celulitis (Flemón)/complicaciones , Celulitis (Flemón)/tratamiento farmacológico , Niño , Femenino , Humanos , Masculino , Celulitis Orbitaria/tratamiento farmacológico , Celulitis Orbitaria/terapia , Enfermedades Orbitales/epidemiología , Enfermedades Orbitales/microbiología , Enfermedades Orbitales/terapia , Periostio , Prevalencia , Estudios Retrospectivos , Streptococcus anginosus
7.
Exp Eye Res ; 213: 108813, 2021 12.
Artículo en Inglés | MEDLINE | ID: mdl-34742692

RESUMEN

BACKGROUND: Orbital compartments harbor a variety of tissues that can be independently targeted in a plethora of disorders resulting in sight-threatening risks. Orbital inflammatory disorders (OID) including Graves' ophthalmopathy, sarcoidosis, IgG4 disease, granulomatosis with polyangiitis, and nonspecific orbital inflammation constitute an important cause of pain, diplopia and vision loss. Physical examination, laboratory tests, imaging, and even biopsy are not always adequate to classify orbital inflammation which is frequently deemed "nonspecific". Tear sampling and testing provide a potential "window" to the orbital disease process through a non-invasive technique that allows longitudinal sampling as the disease evolves. Using PubMed/Medline, we identified potentially relevant articles on tear proteomics published in the English language between 1988 and 2021. Of 303 citations obtained, 225 contained empirical data on tear proteins, including 33 publications on inflammatory conditions, 15 in glaucoma, 15 in thyroid eye disease, 1 in sarcoidosis (75) and 2 in uveitis (77,78). Review articles were used to identify an additional 56 relevant articles through citation search. In this review, we provide a short introduction to the potential use of tears as a diagnostic fluid and tool to investigate the mechanism of ocular diseases. A general review of previous tear proteomics studies is also provided, with a focus on Graves' ophthalmopathy (GO), and a discussion of unmet needs in the diagnosis and treatment of orbital inflammatory disease (OID). The review concludes by pointing out current limitations of mass spectrometric analysis of tear proteins and summarizes future needs in the field.


Asunto(s)
Biomarcadores/metabolismo , Proteínas del Ojo/metabolismo , Oftalmopatía de Graves/diagnóstico , Seudotumor Orbitario/diagnóstico , Lágrimas/metabolismo , Bases de Datos Factuales , Oftalmopatía de Graves/metabolismo , Humanos , Técnicas de Diagnóstico Molecular , Seudotumor Orbitario/metabolismo , Proteómica/métodos
8.
J Pediatr Hematol Oncol ; 43(2): e296-e300, 2021 03 01.
Artículo en Inglés | MEDLINE | ID: mdl-32398599

RESUMEN

Imatinib, a tyrosine kinase inhibitor has improved survival in pediatric patients with Philadelphia chromosome-positive B-cell acute lymphoblastic leukemia. There are no formal drug interactions listed between methotrexate and tyrosine kinase inhibitors. Four pediatric patients with Philadelphia chromosome-positive B-cell acute lymphoblastic leukemia had delayed methotrexate clearance during their first cycle of high-dose methotrexate while receiving imatinib, resulting in acute kidney injury. For subsequent high-dose methotrexate cycles, imatinib was withheld resulting in decreased acute kidney injury, shorter time to methotrexate clearance, less toxicity, and shorter hospitalizations. For pediatric patients with acute lymphoblastic leukemia receiving imatinib, we recommend escalated supportive care measures including increased hyperhydration and leucovoruin frequency. For patients with toxicities secondary to delayed clearance or need for glucarpidase, we recommend holding imatinib with subsequent high-dose methotrexate courses.


Asunto(s)
Lesión Renal Aguda/patología , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Leucemia de Células B/tratamiento farmacológico , Cromosoma Filadelfia , Leucemia-Linfoma Linfoblástico de Células Precursoras/tratamiento farmacológico , Lesión Renal Aguda/inducido químicamente , Lesión Renal Aguda/metabolismo , Adolescente , Adulto , Protocolos de Quimioterapia Combinada Antineoplásica/metabolismo , Niño , Preescolar , Femenino , Estudios de Seguimiento , Humanos , Mesilato de Imatinib/administración & dosificación , Leucemia de Células B/genética , Leucemia de Células B/patología , Masculino , Metotrexato/administración & dosificación , Leucemia-Linfoma Linfoblástico de Células Precursoras/genética , Leucemia-Linfoma Linfoblástico de Células Precursoras/patología , Pronóstico , Adulto Joven
9.
Ophthalmic Plast Reconstr Surg ; 37(3): 212-216, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-32932408

RESUMEN

PURPOSE: To describe the demographics, clinical presentation, treatment, and outcomes of a rare cohort with simultaneous orbital and intracranial abscesses. METHODS: A historical cohort study of 17 patients with simultaneous orbital and intracranial abscesses between 2010 and 2018 was performed. The demographics, location of abscesses, treatment, and outcomes of these patients were analyzed. RESULTS: The mean age was 26.9 years (range 5-83 years). Fourteen patients (82%) were male. In this cohort, the most common orbital abscess location was the superior orbit, involved in 14 patients (82%). The most common site of intracranial abscess was the frontal lobe, involved in 16 patients (94%). Concurrent sinus disease was present in 16 patients (94%). Surgical evacuation was the standard of treatment, with 94% of patients undergoing at least one surgical procedure. Streptococcus species were the most common, isolated from 6 sinus cultures (43%), 3 orbitotomy cultures (21%), and 4 craniectomy cultures (36%). Staphylococcus species were also common. Most patients (94%) had stable or improved mental status and visual function at the conclusion of their treatment. CONCLUSIONS: Simultaneous orbital and intracranial abscesses are rare. Local invasion from the orbit into the intracranial space may occur from direct spread, thus superior orbital abscesses pose the greatest risk for intracranial spread. Additional factors such as infection with Streptococcus and Staphylococcus species as well as male sex appear to be risk factors for intracranial spread. For those who develop intracranial abscesses, young age and absence of seizures or altered mental status at presentation may be associated with favorable outcomes.


Asunto(s)
Absceso , Enfermedades Orbitales , Absceso/diagnóstico , Absceso/tratamiento farmacológico , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Antibacterianos/uso terapéutico , Niño , Preescolar , Estudios de Cohortes , Femenino , Humanos , Masculino , Persona de Mediana Edad , Enfermedades Orbitales/diagnóstico , Enfermedades Orbitales/tratamiento farmacológico , Estudios Retrospectivos , Tomografía Computarizada por Rayos X , Adulto Joven
10.
Ann Surg Oncol ; 27(5): 1638-1644, 2020 May.
Artículo en Inglés | MEDLINE | ID: mdl-31646449

RESUMEN

BACKGROUND: Breast-conserving surgery with breast re-irradiation is an emerging technique in the treatment of selected cases of locally recurrent breast cancer. Further information is needed to characterize factors that may select for an appropriate patient population for this treatment approach. METHODS: We report herein a single-institution retrospective analysis of patients with ipsilateral breast cancer recurrence treated with a second breast-conserving therapy with intraoperative radiotherapy. Patient records were reviewed to analyze toxicity, further recurrence, and characteristics of recurrent patients following this treatment approach. RESULTS: We included 57 patients in the analysis. At median follow-up of 24.5 months, ipsilateral breast tumor recurrence occurred in six patients (11%), four of which localized to the quadrant of the initial recurrent disease and two of which recurred elsewhere in the treated breast. Locoregional control was 89%, and disease-free survival was 81%. Only one patient was found to have grade 3 or greater toxicity. CONCLUSION: A second breast-conserving surgery with intraoperative radiotherapy is tolerable with acceptable toxicity for patients with locally recurrent disease refusing mastectomy. Prospective clinical trials are needed to define the subset of patients who may be appropriate for this treatment approach as an alternative to mastectomy.


Asunto(s)
Neoplasias de la Mama/radioterapia , Neoplasias de la Mama/cirugía , Mastectomía Segmentaria , Recurrencia Local de Neoplasia/patología , Anciano , Anciano de 80 o más Años , Neoplasias de la Mama/patología , Terapia Combinada , Supervivencia sin Enfermedad , Femenino , Humanos , Persona de Mediana Edad , Recurrencia Local de Neoplasia/mortalidad , Radioterapia Adyuvante , Reirradiación , Reoperación , Estudios Retrospectivos
11.
Ophthalmic Plast Reconstr Surg ; 36(1): 70-73, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-31809485

RESUMEN

PURPOSE: To examine the role of adjuvant surgical resection of infantile hemangiomas after systemic ß-blocker therapy. METHODS: This is a multicentered retrospective study. Standard protocol for oral propranolol was employed by the referring physicians. Ocular indications for surgery included ptosis obstructing the visual axis, high degrees of astigmatism causing amblyopia, or disfigurement from residual tumor. Patients underwent complete excision or debulking. RESULTS: Eleven girls and 4 boys were surgically treated with mean operative age of 34.4 months. Patients were followed for a mean of 19.6 months after surgery. Four patients required surgical treatment due to an inability to tolerate medical therapy secondary to drug-related side effects (including bradycardia). The other 11 patients proceeded to surgery due to residual eyelid and orbital lesions despite medical treatment. All 15 patients underwent orbitotomy for residual hemangioma excision. Four patients also underwent simultaneous levator advancement at the time of excision. In all cases, there was resolution of ptosis with clearing of the visual axis. No complications were incurred during the surgical treatment and there were no hemangioma recurrences. CONCLUSIONS: This is the first study to report surgical management of periocular infantile hemangiomas recalcitrant to standard therapy in the ß-blocker era. In patients with infantile hemangioma who have failed medical therapy, adjuvant surgical treatment still plays an important role. For patients with persistent tumor causing ocular sequelae, surgical intervention aimed at soft tissue debulking and ptosis repair can be successful in achieving excellent functional and aesthetic outcomes with minimal side effects.For patients with periocular infantile hemangiomas with residual soft tissue deformity following propranolol therapy, surgical treatment plays an important role in improving functional and cosmetic outcomes with minimal side effects.


Asunto(s)
Hemangioma Capilar , Hemangioma , Antagonistas Adrenérgicos beta/uso terapéutico , Preescolar , Femenino , Hemangioma/tratamiento farmacológico , Hemangioma/cirugía , Hemangioma Capilar/tratamiento farmacológico , Hemangioma Capilar/cirugía , Humanos , Lactante , Masculino , Recurrencia Local de Neoplasia , Propranolol/uso terapéutico , Estudios Retrospectivos , Resultado del Tratamiento
14.
Epilepsy Behav ; 89: 143-147, 2018 12.
Artículo en Inglés | MEDLINE | ID: mdl-30415136

RESUMEN

A survey to assess the familiarity, attitudes, and knowledge about epilepsy was done using a questionnaire identical to the one used in 1999. Two hundred forty-six people participated in our survey in 2017 as compared with 214 in the 1999 survey. In terms of familiarity about epilepsy, 76% had heard or read about epilepsy, 55.7% had witnessed a seizure, and 35.8% knew someone with epilepsy (85%, 56%, and 36% respectively in 1999). Forty point five percent were not familiar with or did not know what to do if they witnessed a seizure (44% in 1999); 25.6% would put something in the mouth of a person having a seizure (32% in 1999). In terms of attitudes towards epilepsy, 14.6% would object to their children associating with one with epilepsy while 19.9% would object to their children marrying a person with epilepsy (13% and 36% respectively in 1999). Only 43.1% would employ a person with epilepsy while 68.3% would employ if seizures do not interfere with the job (42 and 66% respectively in 1999). In terms of knowledge of seizures and epilepsy, 66.3% associated epileptic attack with convulsion (68% in 1999). Only 37.5% were aware of nonconvulsive forms of epilepsy (25% in 1999). Twenty-six point eight percent did not know what treatment to recommend to relatives/friends with epilepsy while 60.6% recommend western medicine (22% and 60% respectively in 1999). CONCLUSION: The awareness, attitudes, and understanding towards epilepsy does not seem to show any significant difference when compared with that in 1999. Reluctance to marry and employ a person with epilepsy persists. The awareness about first aid of a patient having a seizure, attitudes towards marrying a person with epilepsy, and the understanding of cause of epilepsy have shown some positive changes over 17 years.


Asunto(s)
Epilepsia , Conocimientos, Actitudes y Práctica en Salud , Opinión Pública , Adulto , Anciano , Comprensión , Empleo , Femenino , Humanos , Masculino , Matrimonio , Persona de Mediana Edad , Reconocimiento en Psicología , Singapur , Adulto Joven
15.
Ophthalmic Plast Reconstr Surg ; 34(4): e123-e124, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-29870438

RESUMEN

Conjunctivodacryocystorhinostomy with placement of a Jones tube (JT) is the gold standard for upper lacrimal system dysfunction. However, traditional JT have been associated with various complications. In their practice, the authors have encountered challenges with postoperative dry eye in a select group of patients, with recurrence of epiphora following tube occlusion, suggesting a need for decreasing the rate of tear drainage while maintaining a patent JT. To address this issue, the senior author (J.D.N.) introduced a modified JT with a narrow lumen (reduced-flow JT) for patients who experience significant dry eye symptoms after placement of a JT. The authors describe 3 patients who experienced improvement in dry eye symptoms after the placement of reduced-flow JT.


Asunto(s)
Conjuntiva/cirugía , Dacriocistorrinostomía/efectos adversos , Síndromes de Ojo Seco/cirugía , Intubación/instrumentación , Conducto Nasolagrimal/cirugía , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Diseño de Prótesis
16.
Ophthalmic Plast Reconstr Surg ; 34(3): 258-261, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-28582371

RESUMEN

PURPOSE: To evaluate the clinical and anatomical location of orbital plasmacytomas and assess local control following therapy. METHODS: The American Society of Ophthalmic Plastic and Reconstructive Surgery Oncology Database was queried to identify patients diagnosed with orbital plasmacytoma. These patients' records were reviewed for demographic characteristics, clinical and radiologic findings, treatments, and outcomes. RESULTS: Thirty patients from 4 institutions (24 from MD Anderson Cancer Center, 3 from SUNY Downstate Medical Center, 2 from University of California, Los Angeles, and 1 from Oregon Health and Science University) were identified. Eighteen patients (60%) were diagnosed with multiple myeloma (MM) before and 11 (37%) were diagnosed with MM immediately after orbital plasmacytoma. Based on imaging, 4 distinct anatomical patterns were identified: 1) bony plasmacytoma affecting the superotemporal orbit, epidural space, and temporal fossa (15 patients; 50%); 2) discrete orbital plasmacytoma (7 patients; 23%); 3) infiltrative plasmacytoma either originating from a sinus (4 patients; 13%); or 4) originating from the orbital floor and infiltrating facial soft tissue (4 patients; 13%). Of the 29 patients with available treatment data, 2 had radiation only, 3 had chemotherapy only, 6 had chemoradiation, and 18 had stem cell transplant following chemoradiation (n = 17) or only chemotherapy (n = 1). Following treatment, 10 patients achieved complete and 11 achieved partial responses. CONCLUSION: Orbital plasmacytomas were found exclusively in patients with MM diagnosed before or immediately after orbital plasmacytoma. Plasmacytomas can have 4 distinct anatomical patterns of origin. Following treatment, all patients had good to excellent local control of their orbital lesions.


Asunto(s)
Mieloma Múltiple/complicaciones , Neoplasias Orbitales/patología , Plasmacitoma/patología , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos
17.
J Biol Chem ; 291(4): 1789-1802, 2016 Jan 22.
Artículo en Inglés | MEDLINE | ID: mdl-26559976

RESUMEN

Chromatin undergoes a rapid ATP-dependent, ATM and H2AX-independent decondensation when DNA damage is introduced by laser microirradiation. Although the detailed mechanism of this decondensation remains to be determined, the kinetics of decondensation are similar to the kinetics of poly(ADP-ribosyl)ation. We used laser microirradiation to introduce DNA strand breaks into living cells expressing a photoactivatable GFP-tagged histone H2B. We find that poly(ADP-ribosyl)ation mediated primarily by poly(ADP-ribose) polymerase 1 (PARP1) is responsible for the rapid decondensation of chromatin at sites of DNA damage. This decondensation of chromatin correlates temporally with the displacement of histones, which is sensitive to PARP inhibition and is transient in nature. Contrary to the predictions of the histone shuttle hypothesis, we did not find that histone H1 accumulated on poly(ADP-ribose) (PAR) in vivo. Rather, histone H1, and to a lessor extent, histones H2A and H2B were rapidly depleted from the sites of PAR accumulation. However, histone H1 returns to chromatin and the chromatin recondenses. Thus, the PARP-dependent relaxation of chromatin closely correlates with histone displacement.


Asunto(s)
Ensamble y Desensamble de Cromatina/efectos de la radiación , Cromatina/metabolismo , Cromatina/efectos de la radiación , Histonas/metabolismo , Animales , Línea Celular , Daño del ADN/efectos de la radiación , Reparación del ADN , Fibroblastos/metabolismo , Fibroblastos/efectos de la radiación , Humanos , Rayos Láser , Ratones , Poli Adenosina Difosfato Ribosa/metabolismo , Poli(ADP-Ribosa) Polimerasas/metabolismo
18.
Neurobiol Learn Mem ; 144: 86-95, 2017 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-28709998

RESUMEN

Once associating another person with an unpleasant smell, how do we perceive and judge this person from that moment on? Here, we used aversive olfactory conditioning followed by a social attribution task during functional magnetic resonance imaging to address this question. After conditioning, where one of two faces was repeatedly paired with an aversive smell, the participants reported negative affect when viewing the smell-conditioned but not the neutral face. When subsequently confronted with the smell-conditioned face (without any smell), the participants tended to judge both positive and negative behaviors as indicative of personality traits rather than related to the situation. This effect was predicted by the degree of the preceding olfactory evaluative conditioning. Whole brain analysis of stimulus by stage interaction indicated differential activation of the ventromedial prefrontal cortex and right angular gyrus to the conditioned versus the neutral person during the attribution phase only. These results suggest that negative smell associations do not simply induce a negative perception of the target person but rather bias the attribution style towards trait attributions. The fact that this bias was evident regardless of behavior valence suggests it may reflect enhanced psychological distance. Thus, the known observation of social rejection triggered by aversive smell may be driven by a shift in social attribution style.


Asunto(s)
Encéfalo/fisiología , Juicio , Odorantes , Percepción Social , Adulto , Afecto , Mapeo Encefálico , Condicionamiento Clásico , Femenino , Humanos , Imagen por Resonancia Magnética , Masculino , Percepción Olfatoria , Adulto Joven
19.
Breast J ; 23(3): 267-274, 2017 May.
Artículo en Inglés | MEDLINE | ID: mdl-27900811

RESUMEN

Intraoperative radiotherapy (IORT) is a novel and increasingly utilized radiation technique in the treatment of breast carcinoma. There are few reports on the histologic changes seen in breast tissue from patients who have undergone IORT. We sought to evaluate the histologic changes observed in specimens received following IORT, as well as report an unusual case which prompted our study. A retrospective review of patients who received IORT and subsequently had breast tissue histologically evaluated at our institution was performed. Fifteen post-IORT specimens from 12 patients, including the patient from the reported case, were studied. We report a case of a 77-year-old woman found to have mammographic microcalcifications at the lumpectomy site 6 months following lumpectomy and IORT for ductal carcinoma in situ (DCIS). A stereotactic biopsy showed abundant desquamated anucleate squamous cells with calcification and keratin material associated with squamous metaplasia of ducts. Carcinoma was not present. The predominant findings in the post-IORT specimens were fat necrosis and scar (n = 5), recurrent invasive carcinoma (n = 5), surgical site changes (n = 3), abscess (n = 1), and exuberant squamous metaplasia with calcification (n = 1). Five of fifteen (33%) post-IORT specimens showed squamous metaplasia, all of which were collected within 6 months of IORT delivery. The morphologic changes observed after IORT are similar to those seen after external beam radiotherapy. Exuberant squamous metaplasia is an uncommon consequence of IORT; however, pathologists should be aware of this phenomenon and review a history of prior intraoperative radiation before raising concern for malignancy.


Asunto(s)
Neoplasias de la Mama/radioterapia , Glándulas Mamarias Humanas/patología , Radioterapia/efectos adversos , Anciano , Anciano de 80 o más Años , Enfermedades de la Mama/patología , Calcinosis/patología , Carcinoma Intraductal no Infiltrante/radioterapia , Femenino , Humanos , Cuidados Intraoperatorios , Glándulas Mamarias Humanas/efectos de la radiación , Metaplasia/patología , Persona de Mediana Edad , Radioterapia/métodos , Estudios Retrospectivos
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