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10. Tubular Krukenberg Tumor with an Occult Primary

Author

Mardi, K, Kaushal, V, Kaur, N, and Kakkilaya, Dr Srinivas

Subjects
JOURNALS: Online Journal of Health and Allied Sciences, Online Journal of Health and Allied Sciences
Abstract

Tubular Krukenberg tumor with an occult primary can cause problems in histopathologic diagnosis, by mimicking primary ovarian tumors. We present one such occurrence in a 32year old female who underwent surgery for bilateral malignant ovarian tumor. Gross examination of both ovarian tumors revealed bosselated, smooth outer surface with a few cysts on the surface. Cut surface was grey-white to yellowish in colour with cysts filled with serous fluid at the periphery. Microscopic examination revealed mucin laden signet ring cells, predominantly showing tubular architecture within a cellular ovarian stroma. The cytoplasm of these cells varied from granular eosinophilic to pale vacuolated appearance and showed PAS and mucicarmine positive mucin. Differential diagnosis with other primary ovarian tumors is discussed.

Published
2011

21. Assessment of long‐term outcomes post living liver donation highlights the importance of scientific integrity when presenting transplant registry data

Author

Emamaullee, Juliet, Heimbach, Julie K, Olthoff, Kim M, Pomfret, Elizabeth A, Roberts, John P, Selzner, Nazia, Testa, G, Gupta, A, Lee, S, Hashimoto, K, Kwon, D, Emond, J, Griesemer, A, Fox, A, Kaplan, A, Samstein, B, Halazun, K, Brown, R, Kubal, A, Gilroy, R, Davalos, M Rodriguez‐, King, E, Heimbach, J, Watt, K, Florman, S, Schiano, T, Caicedo, J, Dietch, Z, Ganger, D, Kirchner, V, Anderson, B, Shapiro, J, Roberts, J, Pillai, A, Maluf, D, Martins, PN, Sonnenday, C, Chinnakotla, S, Olthoff, K, Bittermann, T, Abt, P, Humar, A, Ganesh, S, Hernandez‐Alejandro, R, Tomiyama, K, Levstik, M, Emamaullee, J, Kaur, N, Genyk, Y, Klair, T, Yamaguchi, S, Baker, T, Kim, R, Goldaracena, N, Bambha, K, Biggins, S, Sturdevant, M, Garonzik‐Wang, J, Al‐Adra, D, Shingina, A, Alexopoulos, S, Mulligan, D, Emre, S, Liapakis, A, Rubman, S, Batra, R, Taner, T, Melcher, M, DiSabato, D, Pomfret, E, Jackson, W, Han, H, and Montenovo, M

Subjects
Biomedical and Clinical Sciences, Clinical Sciences, Immunology, Organ Transplantation, Digestive Diseases, Transplantation, Clinical Research, Chronic Liver Disease and Cirrhosis, Rare Diseases, Liver Disease, Humans, Liver, Liver Transplantation, Living Donors, Registries, Transplants, living donation, living donor liver transplantation, NALLDIG Consortium*, Medical and Health Sciences, Surgery, Clinical sciences
Abstract

Living donor liver transplantation has expanded in recent years, particularly in North America. As experience with this procedure has matured over the last 25 years, centers are increasingly faced with potential living donors who are more medically complex. As donors move through the evaluation process, completing the informed consent process continues to be challenged by a paucity of granular data demonstrating long-term outcomes and overall safety specifically in the otherwise "healthy" living liver donor population. Two recently published studies examined long-term outcomes post-living liver donation using Korean registry data and reported similar results, with excellent overall survival when compared to appropriately matched controls. However, the authors of these studies were presented differently, with one reporting an alarmist view based on one aspect of a suboptimal analysis approach using an inappropriate comparator group. Herein, the North American Living Liver Donor Innovation Group (NALLDIG) consortium discusses these two studies and their potential impact on living liver donation in North America, ultimately highlighting the importance of scientific integrity in data presentation and dissemination when using transplant registry data.

Published
2022

23. Financial toxicity in living donor liver transplantation: A call to action for financial neutrality

Author

Testa, G., Gupta, A., Lee, S., Fricker, Z., Hashimoto, K., Kwon, D., Emond, J., Fox, A., Samstein, B., Brown, R., Rosenblatt, R., Kubal, A., Gilroy, R., King, E., Heimbach, J., Taner, T., Watt, K., Chacko, K., von Ahrens, D., Fortune, B., Florman, S., Schiano, T., Liapakis, A., Griesemer, A., Orandi, B., Caicedo, J., Dietch, Z., Ganger, D., Duarte, A., Ravindra, K., Kappus, M., Melcher, M., Bhan, I., Tholey, D., Kaplan, A., Anderson, B., Selzner, N., Roberts, J.P., Pillai, A., DiSabato, D., Pomfret, E., Jackson, W., Maluf, D., Sonnenday, C., Bloom, P., Haakinson, D., Chinnakotla, S., Aby, E., Olthoff, K., Abu-Gazala, S., Bittermann, T., Abt, P., Humar, A., Ganesh, S., Bambha, K., Biggins, S., Hernandez-Alejandro, R., Tomiyama, K., Emamaullee, J., Kaur, N., Han, H., Klair, T., Yamaguchi, S., Cullen, J., Baker, T., Kim, R., Goldaracena, N., Sturdevant, M., Kwon, Y., Garonzik-Wang, J., Al-Adra, D., Shingina, A., Rizzari, M., Mulligan, D., Rubman, S., Batra, R., Batisti, J., Kaplan, Alyson, Aby, Elizabeth S., Scott, Sonia, Sonnenday, Christopher, Fox, Alyson, Mathur, Amit, Olthoff, Kim, Heimbach, Julie, Ladin, Keren, and Emamaullee, Juliet

Published
2024
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32. Stochastic modeling of multiwavelength variability of the classical BL Lac object OJ 287 on timescales ranging from decades to hours

Author

Goyal, A., Stawarz, L., Zola, S., Marchenko, V., Soida, M., Nilsson, K., Ciprini, S., Baran, A., Ostrowski, M., Wiita, P. J., Gopal-Krishna, Siemiginowska, A., Sobolewska, M., Jorstad, S., Marscher, A., Hovatta, M. F. Aller H. D. Aller T., Caton, D. B., Reichart, D., Matsumoto, K., Sadakane, K., Gazeas, K., Kidger, M., Piirola, V., Jermak, H., Alicavus, F., Baliyan, K. S., Baransky, A., Berdyugin, A., Blay, P., Boumis, P., Boyd, D., Bufan, Y., Torrent, M. Campas, Campos, F., Gomez, J. Carrillo, Dalessio, J., Debski, B., Dimitrov, D., Drozdz, M., Er, H., Erdem, A., Perez, A. Escartin, Ramazani, V. Fallah, Filippenko, A. V., Gafton, E., Garcia, F., Godunova, V., Pinilla, F. Gomez, Gopinathan, M., Haislip, J. B., Haque, S., Harmanen, J., Hudec, R., Hurst, G., Ivarsen, K. M., Joshi, A., Kagitani, M., Karaman, N., Karjalainen, R., Kaur, N., l-Wierzbowska, D. Kozie, Kuligowska, E., Kundera, T., Kurowski, S., Kvammen, A., LaCluyze, A. P., Lee, B. C., Liakos, A., de Haro, J. Lozano, Mohammed, I., Moore, J. P., Mugrauer, M., Nogues, R. Naves, Neely, A. W., Ogloza, W., Okano, S., Pajdosz, U., Pandey, J. C., Perri, M., Poyner, G., Provencal, J., Pursimo, T., Raj, A., Rajkumar, B., Reinthal, R., Reynolds, T., Saario, J., Sadegi, S., Sakanoi, T., Gonzalez, J. L. Salto, Sameer, Heung, A., Simon, O., Siwak, M., Schweyer, T., Alfaro, F. C. Soldan, Sonbas, E., Strobl, J., Takalo, L. O., Espasa, L. Tremosa, Valdes, J. R., Vasylenko, V. V., Verrecchia, F., Webb, J. R., Yoneda, M., Zejmo, M., Zheng, W., Zielinski, P., Janik, J., Chavushyan, V., Cheung, C. C., and Giroletti, M.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

We present the results of our power spectral density analysis for the BL Lac object OJ\,287, utilizing the {\it Fermi}-LAT survey at high-energy $\gamma$-rays, {\it Swift}-XRT in X-rays, several ground-based telescopes and the {\it Kepler} satellite in the optical, and radio telescopes at GHz frequencies. The light curves are modeled in terms of continuous-time auto-regressive moving average (CARMA) processes. Owing to the inclusion of the {\it Kepler} data, we were able to construct \emph{for the first time} the optical variability power spectrum of a blazar without any gaps across $\sim6$ dex in temporal frequencies. Our analysis reveals that the radio power spectra are of a colored-noise type on timescales ranging from tens of years down to months, with no evidence for breaks or other spectral features. The overall optical power spectrum is also consistent with a colored noise on the variability timescales ranging from 117 years down to hours, with no hints of any quasi-periodic oscillations. The X-ray power spectrum resembles the radio and optical power spectra on the analogous timescales ranging from tens of years down to months. Finally, the $\gamma$-ray power spectrum is noticeably different from the radio, optical, and X-ray power spectra of the source: we have detected a characteristic relaxation timescale in the {\it Fermi}-LAT data, corresponding to $\sim 150$\,days, such that on timescales longer than this, the power spectrum is consistent with uncorrelated (white) noise, while on shorter variability timescales there is correlated (colored) noise., Comment: ApJ accepted

Published
2017
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33. Multiwavelength observations of a VHE gamma-ray flare from PKS 1510-089 in 2015

Author

MAGIC Collaboration, Ahnen, M. L., Ansoldi, S., Antonelli, L. A., Arcaro, C., Babić, A., Banerjee, B., Bangale, P., de Almeida, U. Barres, Barrio, J. A., González, J. Becerra, Bednarek, W., Bernardini, E., Berti, A., Biasuzzi, B., Biland, A., Blanch, O., Bonnefoy, S., Bonnoli, G., Borracci, F., Bretz, T., Carosi, R., Carosi, A., Chatterjee, A., Colin, P., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., Cumani, P., Da Vela, P., Dazzi, F., De Angelis, A., De Lotto, B., Wilhelmi, E. de Oña, Di Pierro, F., Doert, M., Domínguez, A., Prester, D. Dominis, Dorner, D., Doro, M., Einecke, S., Glawion, D. Eisenacher, Elsaesser, D., Engelkemeier, M., Ramazani, V. Fallah, Fernández-Barral, A., Fidalgo, D., Fonseca, M. V., Font, L., Fruck, C., Galindo, D., López, R. J. García, Garczarczyk, M., Gaug, M., Giammaria, P., Godinović, N., Gora, D., Guberman, D., Hadasch, D., Hahn, A., Hassan, T., Hayashida, M., Herrera, J., Hose, J., Hrupec, D., Hughes, G., Ishio, K., Konno, Y., Kubo, H., Kushida, J., Kuveždić, D., Lelas, D., Lindfors, E., Lombardi, S., Longo, F., López, M., Majumdar, P., Makariev, M., Maneva, G., Manganaro, M., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Mazin, D., Menzel, U., Mirzoyan, R., Moralejo, A., Moretti, E., Nakajima, D., Neustroev, V., Niedzwiecki, A., Rosillo, M. Nievas, Nilsson, K., Nishijima, K., Noda, K., Nogués, L., Paiano, S., Palacio, J., Palatiello, M., Paneque, D., Paoletti, R., Paredes, J. M., Paredes-Fortuny, X., Pedaletti, G., Peresano, M., Perri, L., Persic, M., Poutanen, J., Moroni, P. G. Prada, Prandini, E., Puljak, I., Garcia, J. R., Reichardt, I., Rhode, W., Ribó, M., Rico, J., Saito, T., Satalecka, K., Schroeder, S., Schweizer, T., Shore, S. N., Sillanpää, A., Sitarek, J., Šnidarić, I., Sobczynska, D., Stamerra, A., Strzys, M., Surić, T., Takalo, L., Tavecchio, F., Temnikov, P., Terzić, T., Tescaro, D., Teshima, M., Torres, D. F., Torres-Albà, N., Toyama, T., Treves, A., Vanzo, G., Acosta, M. Vazquez, Vovk, I., Ward, J. E., Will, M., Wu, M. H., Zarić, D., Desiante, R., D'Ammando, F., Larsson, S., Raiteri, C. M., Reinthal, R., Lähteenmäki, A., Järvelä, E., Tornikoski, M., Ramakrishnan, V., Jorstad, S. G., Marscher, A. P., Bala, V., MacDonald, N. R., Kaur, N., Sameer, Baliyan, K., Acosta-Pulido, J. A., Lazaro, C., Martínez-Lombilla, C., Grinon-Marin, A. B., Yabar, A. Pastor, Protasio, C., Carnerero, M. I., Jermak, H., Steele, I. A., Larionov, V. M., Borman, G. A., and Grishina, T. S.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

Context. PKS 1510-089 is one of only a few flat spectrum radio quasars detected in the VHE (very-high-energy, > 100 GeV) gamma-ray band. Aims. We study the broadband spectral and temporal properties of the PKS 1510-089 emission during a high gamma-ray state. Methods. We performed VHE gamma-ray observations of PKS 1510-089 with the MAGIC telescopes during a long high gamma-ray state in May 2015. In order to perform broadband modelling of the source, we have also gathered contemporaneous multiwavelength data in radio, IR, optical photometry and polarization, UV, X-ray and GeV gamma-ray ranges. We construct a broadband spectral energy distribution (SED) in two periods, selected according to VHE gamma-ray state. Results. PKS 1510-089 has been detected by MAGIC during a few day-long observations performed in the middle of a long, high optical and gamma-ray state, showing for the first time a significant VHE gamma-ray variability. Similarly to the optical and gamma-ray high state of the source detected in 2012, it was accompanied by a rotation of the optical polarization angle and the emission of a new jet component observed in radio. However, due to large uncertainty on the knot separation time, the association with the VHE gamma-ray emission cannot be firmly established. The spectral shape in the VHE band during the flare is similar to the ones obtained during previous measurements of the source. The observed flux variability sets for the first time constraints on the size of the region from which VHE gamma rays are emitted. We model the broadband SED in the framework of the external Compton scenario and discuss the possible emission site in view of multiwavelength data and alternative emission models., Comment: 12 pages, 10 figures, accepted for a publication in A&A

Published
2016
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38. Primary black hole spin in OJ287 as determined by the General Relativity centenary flare

Author

Valtonen, M. J., Zola, S., Ciprini, S., Gopakumar, A., Matsumoto, K., Sadakane, K., Kidger, M., Gazeas, K., Nilsson, K., Berdyugin, A., Piirola, V., Jermak, H., Baliyan, K. S., Alicavus, F., Boyd, D., Torrent, M. Campas, Campos, F., Gomez, J. Carrillo, Caton, D. B., Chavushyan, V., Dalessio, J., Debski, B., Dimitrov, D., Drozdz, M., Er, H., Erdem, A., Perez, A. Escartin, Ramazani, V. Fallah, Filippenko, A. V., Ganesh, S., Garcia, F., Pinilla, F. Gomez, Gopinathan, M., Haislip, J. B., Hudec, R., Hurst, G., Ivarsen, K. M., Jelinek, M., Joshi, A., Kagitani, M., Kaur, N., Keel, W. C., LaCluyze, A. P., Lee, B. C., Lindfors, E., de Haro, J. Lozano, Moore, J. P., Mugrauer, M., Nogues, R. Naves, Neely, A. W., Nelson, R. H., Ogloza, W., Okano, S., Pandey, J. C., Perri, M., Pihajoki, P., Poyner, G., Provencal, J., Pursimo, T., Raj, A., Reichart, D. E., Reinthal, R., Sadegi, S., Sakanoi, T., Gonzalez, J. L. Salto, Schweyer, T., Siwak, M., Alfaro, F. C. Soldan, Sonbas, E., Steele, I., Stocke, J. T., Strobl, J., Takalo, L. O., Tomov, T., Espasa, L. Tremosa, Valdes, J. R., Perez, J. Valero, Verrecchia, F., Webb, J. R., Yoneda, M., Zejmo, M., Zheng, W., Telting, J., Saario, J., Reynolds, T., Kvammen, A., Gafton, E., Karjalainen, R., Harmanen, J., and Blay, P.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

OJ287 is a quasi-periodic quasar with roughly 12 year optical cycles. It displays prominent outbursts which are predictable in a binary black hole model. The model predicted a major optical outburst in December 2015. We found that the outburst did occur within the expected time range, peaking on 2015 December 5 at magnitude 12.9 in the optical R-band. Based on Swift/XRT satellite measurements and optical polarization data, we find that it included a major thermal component. Its timing provides an accurate estimate for the spin of the primary black hole, chi = 0.313 +- 0.01. The present outburst also confirms the established general relativistic properties of the system such as the loss of orbital energy to gravitational radiation at the 2 % accuracy level and it opens up the possibility of testing the black hole no-hair theorem with a 10 % accuracy during the present decade.

Published
2016
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41. Microbial Nomenclature and Laboratory Standards: Two Key Aspects to Consider [Letter]

Author

Kaur N, Kumar N, and Kumar H

Subjects
n/a, Infectious and parasitic diseases, RC109-216
Abstract

Narinder Kaur,1 Nitin Kumar,2 Harit Kumar1 1Department of Microbiology, Maharishi Markandeshwar Institute of Medical Sciences & Research, Maharishi Markandeshwar (Deemed to be) University Mullana, Ambala, Haryana, India; 2Department of Microbiology, Symbiosis Medical College for Women, Symbiosis International (Deemed University) (SIU), Pune, Maharashtra, IndiaCorrespondence: Harit Kumar, Email kumarharit4@gmail.com

Published
2022

49. Fluctuation-Induced Heat Release from Temperature-Quenched Nuclear Spins near a Quantum Critical Point

Author

Kim, Y. H., Kaur, N., Atkins, B. M., Dalal, N. S., and Takano, Y.

Subjects
Condensed Matter - Strongly Correlated Electrons
Abstract

At a quantum critical point (QCP) -- a zero-temperature singularity in which a line of continuous phase transition terminates -- quantum fluctuations diverge in space and time, leading to exotic phenomena that can be observed at non-zero temperatures. Using a quantum antiferromagnet, we present calorimetric evidence that nuclear spins frozen in a high-temperature metastable state by temperature quenching are annealed by quantum fluctuations near the QCP. This phenomenon, with readily detectable heat release from the nuclear spins as they are annealed, serves as an excellent marker of a quantum critical region around the QCP and provides a probe of the dynamics of the divergent quantum fluctuations., Comment: 5 pages, 4 figures

Published
2009
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