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Assessment of Second-Opinion Strategies for Diagnoses of Cutaneous Melanocytic Lesions.

Piepkorn MW, Longton GM, Reisch LM, Elder DE, Pepe MS, Kerr KF, Tosteson ANA, Nelson HD, Knezevich S, Radick A, Shucard H, Onega T, Carney PA, Elmore JG, Barnhill RL.

JAMA Netw Open. 2019 Oct 2;2(10):e1912597. doi: 10.1001/jamanetworkopen.2019.12597.


Concordance and Reproducibility of Melanoma Staging According to the 7th vs 8th Edition of the AJCC Cancer Staging Manual.

Elmore JG, Elder DE, Barnhill RL, Knezevich SR, Longton GM, Titus LJ, Weinstock MA, Pepe MS, Nelson HD, Reisch LM, Radick AC, Piepkorn MW.

JAMA Netw Open. 2018 May;1(1). pii: e180083. doi: 10.1001/jamanetworkopen.2018.0083.


Characteristics and diagnostic performance of pathologists who enjoy interpreting melanocytic lesions.

Radick AC, Phipps AI, Piepkorn MW, Nelson HD, Barnhill RL, Elder DE, Reisch LM, Frederick PD, Elmore JG.

Dermatol Online J. 2018 Jun 15;24(6). pii: 13030/qt96g5q3sz.


Accuracy of Digital Pathologic Analysis vs Traditional Microscopy in the Interpretation of Melanocytic Lesions.

Onega T, Barnhill RL, Piepkorn MW, Longton GM, Elder DE, Weinstock MA, Knezevich SR, Reisch LM, Carney PA, Nelson HD, Radick AC, Elmore JG.

JAMA Dermatol. 2018 Oct 1;154(10):1159-1166. doi: 10.1001/jamadermatol.2018.2388.


Malpractice Concerns, Defensive Medicine, and the Histopathology Diagnosis of Melanocytic Skin Lesions.

Titus LJ, Reisch LM, Tosteson ANA, Nelson HD, Frederick PD, Carney PA, Barnhill RL, Elder DE, Weinstock MA, Piepkorn MW, Elmore JG.

Am J Clin Pathol. 2018 Aug 30;150(4):338-345. doi: 10.1093/ajcp/aqy057.


Influence of variability in assessment of Breslow thickness, mitotic rate and ulceration among US pathologists interpreting invasive melanoma, for the purpose of AJCC staging.

Taylor L, Hood K, Reisch L, Elmore J, Piepkorn M, Barnhill R, Knezevich S, Radick A, Elder D.

J Cutan Pathol. 2018 Aug;45(8):588-596. doi: 10.1111/cup.13265. Epub 2018 May 29.


Complexities of perceived and actual performance in pathology interpretation: A comparison of cutaneous melanocytic skin and breast interpretations.

Carney PA, Frederick PD, Reisch LM, Titus L, Knezevich SR, Weinstock MA, Piepkorn MW, Barnhill RL, Elder DE, Weaver DL, Elmore JG.

J Cutan Pathol. 2018 Jul;45(7):478-490. doi: 10.1111/cup.13147. Epub 2018 Apr 26.


Pathologist characteristics associated with accuracy and reproducibility of melanocytic skin lesion interpretation.

Elder DE, Piepkorn MW, Barnhill RL, Longton GM, Nelson HD, Knezevich SR, Pepe MS, Carney PA, Titus LJ, Onega T, Tosteson ANA, Weinstock MA, Elmore JG.

J Am Acad Dermatol. 2018 Jul;79(1):52-59.e5. doi: 10.1016/j.jaad.2018.02.070. Epub 2018 Mar 7.


Population-Based Analysis of Histologically Confirmed Melanocytic Proliferations Using Natural Language Processing.

Lott JP, Boudreau DM, Barnhill RL, Weinstock MA, Knopp E, Piepkorn MW, Elder DE, Knezevich SR, Baer A, Tosteson ANA, Elmore JG.

JAMA Dermatol. 2018 Jan 1;154(1):24-29. doi: 10.1001/jamadermatol.2017.4060.


Pathologists' Use of Second Opinions in Interpretation of Melanocytic Cutaneous Lesions: Policies, Practices, and Perceptions.

Geller BM, Frederick PD, Knezevich SR, Lott JP, Nelson HD, Titus LJ, Carney PA, Tosteson ANA, Onega TL, Barnhill RL, Weinstock MA, Elder DE, Piepkorn MW, Elmore JG.

Dermatol Surg. 2018 Feb;44(2):177-185. doi: 10.1097/DSS.0000000000001256.


Skin cancer screening: recommendations for data-driven screening guidelines and a review of the US Preventive Services Task Force controversy.

Johnson MM, Leachman SA, Aspinwall LG, Cranmer LD, Curiel-Lewandrowski C, Sondak VK, Stemwedel CE, Swetter SM, Vetto J, Bowles T, Dellavalle RP, Geskin LJ, Grossman D, Grossmann KF, Hawkes JE, Jeter JM, Kim CC, Kirkwood JM, Mangold AR, Meyskens F, Ming ME, Nelson KC, Piepkorn M, Pollack BP, Robinson JK, Sober AJ, Trotter S, Venna SS, Agarwala S, Alani R, Averbook B, Bar A, Becevic M, Box N, E Carson W 3rd, Cassidy PB, Chen SC, Chu EY, Ellis DL, Ferris LK, Fisher DE, Kendra K, Lawson DH, Leming PD, Margolin KA, Markovic S, Martini MC, Miller D, Sahni D, Sharfman WH, Stein J, Stratigos AJ, Tarhini A, Taylor MH, Wisco OJ, Wong MK.

Melanoma Manag. 2017 Mar;4(1):13-37. doi: 10.2217/mmt-2016-0022. Epub 2017 Mar 1. Review.


Pathologists' diagnosis of invasive melanoma and melanocytic proliferations: observer accuracy and reproducibility study.

Elmore JG, Barnhill RL, Elder DE, Longton GM, Pepe MS, Reisch LM, Carney PA, Titus LJ, Nelson HD, Onega T, Tosteson ANA, Weinstock MA, Knezevich SR, Piepkorn MW.

BMJ. 2017 Jun 28;357:j2813. doi: 10.1136/bmj.j2813. Erratum in: BMJ. 2017 Aug 8;358:j3798.


The influence of tumor regression, solar elastosis, and patient age on pathologists' interpretation of melanocytic skin lesions.

Titus L, Barnhill RL, Lott JP, Piepkorn MW, Elder DE, Frederick PD, Nelson HD, Carney PA, Knezevich SR, Weinstock MA, Elmore JG.

Lab Invest. 2017 Feb;97(2):187-193. doi: 10.1038/labinvest.2016.120. Epub 2016 Nov 28.


The utilization of spitz-related nomenclature in the histological interpretation of cutaneous melanocytic lesions by practicing pathologists: results from the M-Path study.

Zhao G, Lee KC, Peacock S, Reisch LM, Knezevich SR, Elder DE, Piepkorn MW, Elmore JG, Barnhill RL.

J Cutan Pathol. 2017 Jan;44(1):5-14. doi: 10.1111/cup.12826. Epub 2016 Oct 28.


Variation among pathologists' treatment suggestions for melanocytic lesions: A survey of pathologists.

Lee KC, Peacock S, Weinstock MA, Zhao GA, Knezevich SR, Elder DE, Barnhill RL, Piepkorn MW, Reisch LM, Carney PA, Onega T, Lott JP, Elmore JG.

J Am Acad Dermatol. 2017 Jan;76(1):121-128. doi: 10.1016/j.jaad.2016.07.029. Epub 2016 Sep 28.


Skin biopsy utilization and melanoma incidence among Medicare beneficiaries.

Weinstock MA, Lott JP, Wang Q, Titus LJ, Onega T, Nelson HD, Pearson L, Piepkorn M, Barnhill RL, Elmore JG, Tosteson ANA.

Br J Dermatol. 2017 Apr;176(4):949-954. doi: 10.1111/bjd.15077. Epub 2017 Mar 1.


Achieving consensus for the histopathologic diagnosis of melanocytic lesions: use of the modified Delphi method.

Carney PA, Reisch LM, Piepkorn MW, Barnhill RL, Elder DE, Knezevich S, Geller BM, Longton G, Elmore JG.

J Cutan Pathol. 2016 Oct;43(10):830-7. doi: 10.1111/cup.12751. Epub 2016 Jul 1.


Evaluation of the Melanocytic Pathology Assessment Tool and Hierarchy for Diagnosis (MPATH-Dx) classification scheme for diagnosis of cutaneous melanocytic neoplasms: Results from the International Melanoma Pathology Study Group.

Lott JP, Elmore JG, Zhao GA, Knezevich SR, Frederick PD, Reisch LM, Chu EY, Cook MG, Duncan LM, Elenitsas R, Gerami P, Landman G, Lowe L, Messina JL, Mihm MC, van den Oord JJ, Rabkin MS, Schmidt B, Shea CR, Yun SJ, Xu GX, Piepkorn MW, Elder DE, Barnhill RL; International Melanoma Pathology Study Group.

J Am Acad Dermatol. 2016 Aug;75(2):356-63. doi: 10.1016/j.jaad.2016.04.052. Epub 2016 May 14.


The self-reported use of immunostains and cytogenetic testing in the diagnosis of melanoma by practicing U.S. pathologists of 10 selected states.

Zhao G, Lee KC, Kwon G, Frederick PD, Onega TL, Piepkorn MW, Knezevich S, Barnhill RL, Elder DE, Elmore JG.

J Cutan Pathol. 2016 Jun;43(6):492-7. doi: 10.1111/cup.12705. Epub 2016 Apr 7.


Cellular Blue Nevomelanocytic Lesions: Analysis of Clinical, Histological, and Outcome Data in 37 Cases.

Hung T, Argenyi Z, Erickson L, Guitart J, Horenstein MG, Lowe L, Messina J, Piepkorn MW, Prieto VG, Rabkin MS, Schmidt B, Selim MA, Shea CR, Trotter MJ, Barnhill RL.

Am J Dermatopathol. 2016 Jul;38(7):499-503. doi: 10.1097/DAD.0000000000000483.


How concerns and experiences with medical malpractice affect dermatopathologists' perceptions of their diagnostic practices when interpreting cutaneous melanocytic lesions.

Carney PA, Frederick PD, Reisch LM, Knezevich S, Piepkorn MW, Barnhill RL, Elder DE, Geller BM, Titus L, Weinstock MA, Nelson HD, Elmore JG.

J Am Acad Dermatol. 2016 Feb;74(2):317-24; quiz 324.e1-8. doi: 10.1016/j.jaad.2015.09.037. Epub 2015 Nov 11.


Use of Digital Whole Slide Imaging in Dermatopathology.

Onega T, Reisch LM, Frederick PD, Geller BM, Nelson HD, Lott JP, Radick AC, Elder DE, Barnhill RL, Piepkorn MW, Elmore JG.

J Digit Imaging. 2016 Apr;29(2):243-53. doi: 10.1007/s10278-015-9836-y.


Oligoclonal bands predict multiple sclerosis in children with optic neuritis.

Heussinger N, Kontopantelis E, Gburek-Augustat J, Jenke A, Vollrath G, Korinthenberg R, Hofstetter P, Meyer S, Brecht I, Kornek B, Herkenrath P, Schimmel M, Wenner K, Häusler M, Lutz S, Karenfort M, Blaschek A, Smitka M, Karch S, Piepkorn M, Rostasy K, Lücke T, Weber P, Trollmann R, Klepper J, Häussler M, Hofmann R, Weissert R, Merkenschlager A, Buttmann M; for GRACE-MS (German-speaking Research Alliance for ChildrEn with Multiple Sclerosis).

Ann Neurol. 2015 Jun;77(6):1076-82. doi: 10.1002/ana.24409. Epub 2015 May 11.


Dermatology in an age of fully transparent electronic medical records.

Lott JP, Piepkorn MW, Elmore JG.

JAMA Dermatol. 2015 May;151(5):477-8. doi: 10.1001/jamadermatol.2014.4362. No abstract available.


Diameter of dysplastic nevi is a more robust biomarker of increased melanoma risk than degree of histologic dysplasia: a case-control study.

Xiong MY, Rabkin MS, Piepkorn MW, Barnhill RL, Argenyi Z, Erickson L, Guitart J, Lowe L, Shea CR, Trotter MJ, Lew RA, Weinstock MA.

J Am Acad Dermatol. 2014 Dec;71(6):1257-1258.e4. doi: 10.1016/j.jaad.2014.07.030. Epub 2014 Nov 15. No abstract available.


Variability in mitotic figures in serial sections of thin melanomas.

Knezevich SR, Barnhill RL, Elder DE, Piepkorn MW, Reisch LM, Pocobelli G, Carney PA, Elmore JG.

J Am Acad Dermatol. 2014 Dec;71(6):1204-11. doi: 10.1016/j.jaad.2014.07.056. Epub 2014 Sep 16.


Reply: surgical margins for possibly malignant melanocytic lesions and the overdiagnosis of melanoma.

Piepkorn MW, Barnhill RL, Elder DE.

J Am Acad Dermatol. 2014 Sep;71(3):590. doi: 10.1016/j.jaad.2014.05.031. No abstract available.


The MPATH-Dx reporting schema for melanocytic proliferations and melanoma.

Piepkorn MW, Barnhill RL, Elder DE, Knezevich SR, Carney PA, Reisch LM, Elmore JG.

J Am Acad Dermatol. 2014 Jan;70(1):131-41. doi: 10.1016/j.jaad.2013.07.027. Epub 2013 Oct 28.


State of the art, nomenclature, and points of consensus and controversy concerning benign melanocytic lesions: outcome of an international workshop.

Barnhill RL, Cerroni L, Cook M, Elder DE, Kerl H, LeBoit PE, McCarthy SW, Mihm MC, Mooi WJ, Piepkorn MW, Prieto VG, Scolyer RA.

Adv Anat Pathol. 2010 Mar;17(2):73-90. doi: 10.1097/PAP.0b013e3181cfe758.


Distinct inflammatory properties of late-activated macrophages in inflammatory myopathies.

Rostasy KM, Schmidt J, Bahn E, Pfander T, Piepkorn M, Wilichowski E, Schulz-Schaeffer J.

Acta Myol. 2008 Oct;27:49-53.


Atypical cellular blue nevi (cellular blue nevi with atypical features): lack of consensus for diagnosis and distinction from cellular blue nevi and malignant melanoma ("malignant blue nevus").

Barnhill RL, Argenyi Z, Berwick M, Duray PH, Erickson L, Guitart J, Horenstein MG, Lowe L, Messina J, Paine S, Piepkorn MW, Prieto V, Rabkin MS, Schmidt B, Selim A, Shea CR, Trotter MJ.

Am J Surg Pathol. 2008 Jan;32(1):36-44.


Reliability of the histopathologic diagnosis of keratinocyte carcinomas.

Jagdeo J, Weinstock MA, Piepkorn M, Bingham SF; Department of Veteran Affairs Topical Tretinoin Chemoprevention Trial Group.

J Am Acad Dermatol. 2007 Aug;57(2):279-84. Epub 2007 May 7.


Dysplastic naevi with moderate to severe histological dysplasia: a risk factor for melanoma.

Shors AR, Kim S, White E, Argenyi Z, Barnhill RL, Duray P, Erickson L, Guitart J, Horenstein MG, Lowe L, Messina J, Rabkin MS, Schmidt B, Shea CR, Trotter MJ, Piepkorn MW.

Br J Dermatol. 2006 Nov;155(5):988-93.


Neonatal eosinophilic pustulosis.

Asgari M, Leiferman KM, Piepkorn M, Kuechle MK.

Int J Dermatol. 2006 Feb;45(2):131-4.


The Spitz nevus is melanoma.

Piepkorn M.

Am J Dermatopathol. 2005 Aug;27(4):367-9. Review. No abstract available.


Monocyte/macrophage differentiation in dermatomyositis and polymyositis.

Rostasy KM, Piepkorn M, Goebel HH, Menck S, Hanefeld F, Schulz-Schaeffer WJ.

Muscle Nerve. 2004 Aug;30(2):225-30.


The female, red Duroc pig as an animal model of hypertrophic scarring and the potential role of the cones of skin.

Zhu KQ, Engrav LH, Gibran NS, Cole JK, Matsumura H, Piepkorn M, Isik FF, Carrougher GJ, Muangman PM, Yunusov MY, Yang TM.

Burns. 2003 Nov;29(7):649-64.


Interobserver reproducibility of ulceration assessment in primary cutaneous melanomas.

Spatz A, Cook MG, Elder DE, Piepkorn M, Ruiter DJ, Barnhill RL.

Eur J Cancer. 2003 Sep;39(13):1861-5.


Are en face frozen sections accurate for diagnosing margin status in melanocytic lesions?

Prieto VG, Argenyi ZB, Barnhill RL, Duray PH, Elenitsas R, From L, Guitart J, Horenstein MG, Ming ME, Piepkorn MW, Rabkin MS, Reed JA, Selim MA, Trotter MJ, Johnson MM, Shea CR.

Am J Clin Pathol. 2003 Aug;120(2):203-8.


Parasitism of basal cell carcinoma by lentigo maligna melanoma.

Wang H, Benda PM, Piepkorn MW.

J Am Acad Dermatol. 2003 May;48(5 Suppl):S92-4.


Generation of T-cell immunity to the HER-2/neu protein after active immunization with HER-2/neu peptide-based vaccines.

Disis ML, Gooley TA, Rinn K, Davis D, Piepkorn M, Cheever MA, Knutson KL, Schiffman K.

J Clin Oncol. 2002 Jun 1;20(11):2624-32.


Histological characteristics of metastasizing thin melanomas: a case-control study of 43 cases.

Guitart J, Lowe L, Piepkorn M, Prieto VG, Rabkin MS, Ronan SG, Shea CR, Tron VA, White W, Barnhill RL.

Arch Dermatol. 2002 May;138(5):603-8.


Reticular telangiectatic erythema associated with an implantable cardioverter defibrillator.

Dinulos JG, Vath B, Beckmann C, Welch MP, Piepkorn M.

Arch Dermatol. 2001 Sep;137(9):1259-61. No abstract available.


The p75 neurotrophin receptor, relative to other Schwann cell and melanoma markers, is abundantly Expressed in spindled melanomas.

Iwamoto S, Burrows RC, Agoff SN, Piepkorn M, Bothwell M, Schmidt R.

Am J Dermatopathol. 2001 Aug;23(4):288-94.


Whither the atypical (dysplastic) nevus?

Piepkorn M.

Am J Clin Pathol. 2001 Feb;115(2):177-9. No abstract available.


Melanocyte destruction after antigen-specific immunotherapy of melanoma: direct evidence of t cell-mediated vitiligo.

Yee C, Thompson JA, Roche P, Byrd DR, Lee PP, Piepkorn M, Kenyon K, Davis MM, Riddell SR, Greenberg PD.

J Exp Med. 2000 Dec 4;192(11):1637-44.


The application of direct immunofluorescence to intraoperative neurosurgical diagnosis.

Iwamoto S, Burrows RC, Born DE, Piepkorn M, Bothwell M.

Biomol Eng. 2000 Oct;17(1):17-22.


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