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Gill AJ, Hes O, Papathomas T, Šedivcová M, Tan PH, Agaimy A, Andresen PA, Kedziora A, Clarkson A, Toon CW, Sioson L, Watson N, Chou A, Paik J, Clifton-Bligh RJ, Robinson BG, Benn DE, Hills K, Maclean F, Niemeijer ND, Vlatkovic L, Hartmann A, Corssmit EPM, van Leenders GJLH, Przybycin C, McKenney JK, Magi-Galluzzi C, Yilmaz A, Yu D, Nicoll KD, Yong JL, Sibony M, Yakirevich E, Fleming S, Chow CW, Miettinen M, Michal M, Trpkov K. Succinate dehydrogenase (SDH)-deficient renal carcinoma: a morphologically distinct entity: a clinicopathologic series of 36 tumors from 27 patients. Am J Surg Pathol 2015; 38:1588-602. [PMID: 25025441 PMCID: PMC4229399 DOI: 10.1097/pas.0000000000000292] [Citation(s) in RCA: 213] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Succinate dehydrogenase (SDH)-deficient renal carcinoma has been accepted as a provisional entity in the 2013 International Society of Urological Pathology Vancouver Classification. To further define its morphologic and clinical features, we studied a multi-institutional cohort of 36 SDH-deficient renal carcinomas from 27 patients, including 21 previously unreported cases. We estimate that 0.05% to 0.2% of all renal carcinomas are SDH deficient. Mean patient age at presentation was 37 years (range, 14 to 76 y), with a slight male predominance (M:F=1.7:1). Bilateral tumors were observed in 26% of patients. Thirty-four (94%) tumors demonstrated the previously reported morphology at least focally, which included: solid or focally cystic growth, uniform cytology with eosinophilic flocculent cytoplasm, intracytoplasmic vacuolations and inclusions, and round to oval low-grade nuclei. All 17 patients who underwent genetic testing for mutation in the SDH subunits demonstrated germline mutations (16 in SDHB and 1 in SDHC). Nine of 27 (33%) patients developed metastatic disease, 2 of them after prolonged follow-up (5.5 and 30 y). Seven of 10 patients (70%) with high-grade nuclei metastasized as did all 4 patients with coagulative necrosis. Two of 17 (12%) patients with low-grade nuclei metastasized, and both had unbiopsied contralateral tumors, which may have been the origin of the metastatic disease. In conclusion, SDH-deficient renal carcinoma is a rare and unique type of renal carcinoma, exhibiting stereotypical morphologic features in the great majority of cases and showing a strong relationship with SDH germline mutation. Although this tumor may undergo dedifferentiation and metastasize, sometimes after a prolonged delay, metastatic disease is rare in the absence of high-grade nuclear atypia or coagulative necrosis.
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Affiliation(s)
- Anthony J Gill
- *Department of Anatomical Pathology †Cancer Diagnosis and Pathology Research Group §§Cancer Genetics, Kolling Institute of Medical Research, Royal North Shore Hospital ‡University of Sydney, Sydney ††Histopath Pathology ¶¶Douglass Hanly Moir Pathology, North Ryde ‡‡Department of Anatomical Pathology, St Vincents Hospital, Darlinghurst §§§Department of Anatomical Pathology, South Western Area Pathology Service, Liverpool, NSW ∥∥Pathology Queensland, Gold Coast University Hospital, Qld ****Department of Anatomical Pathology, Royal Children's Hospital, Parkville, Vic., Australia §Department of Pathology, Medical Faculty and Charles University, Pilsen, Czech Republic ∥Department of Pathology, Josephine Nefkens Institute, Erasmus Medical Centre, Rotterdam ##Department of Endocrinology, Leiden University Medical Center, Leiden, The Netherlands ¶Department of Pathology, Singapore General Hospital, Singapore, Singapore #Institute of Pathology, Friedrich-Alexander-University, Erlangen, Germany **Department of Pathology, Oslo University Hospital ***Department of Pathology, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway †††Robert J Tomsich Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH ¶¶¶Department of Pathology, Alpert Medical School of Brown University, Rhode Island Hospital, Providence, RI ††††Laboratory of Surgical Pathology, National Cancer Institute, Bethesda, MD ‡‡‡Department of Pathology and Laboratory Medicine, Calgary Laboratory Services and University of Calgary, Calgary, AB, Canada ∥∥∥Department of Pathology, Hopital Cochin Université Paris Descartes, Paris, France ###Department of Molecular Pathology, University of Dundee, Ninewells Hospital, Dundee, UK
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Scolyer RA, Shaw HM, Thompson JF, Li LXL, Colman MH, Lo SK, McCarthy SW, Palmer AA, Nicoll KD, Dutta B, Slobedman E, Watson GF, Stretch JR. Interobserver reproducibility of histopathologic prognostic variables in primary cutaneous melanomas. Am J Surg Pathol 2004; 27:1571-6. [PMID: 14657718 DOI: 10.1097/00000478-200312000-00011] [Citation(s) in RCA: 113] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
BACKGROUND The prognosis for patients with localized primary cutaneous melanoma is known to depend principally on tumor thickness, and to a lesser extent on ulcerative state and Clark level. We have recently found in an analysis of 3661 patients that tumor mitotic rate (TMR) is also an important prognostic parameter, ranking second only to tumor thickness. However, few studies have assessed the accuracy and reproducibility with which these features of a melanoma are recorded by histopathologists. AIM To assess interobserver reproducibility of major pathologic prognostic parameters in cutaneous melanoma. METHODS Single hematoxylin and eosin-stained slides of 69 dermally invasive primary cutaneous melanomas were circulated among six pathologists with differing experience in the assessment of melanocytic tumors. The observers independently determined the tumor thickness, Clark level of invasion, ulcerative state, and TMR for each lesion. Intraclass correlation coefficients and kappa scores for multiple ratings per subject were calculated. RESULTS The intraclass correlation coefficients were 0.96 for tumor thickness and 0.76 for TMR. The kappa scores were 0.83 for ulcerative state and 0.60 for Clark level. These results indicated excellent agreement among the pathologists for measurements of tumor thickness, ulcerative state, and TMR and fair to good agreement for Clark level. CONCLUSIONS Appropriately trained and experienced histopathologists can assess prognostically important features of melanomas accurately and reproducibly. Given our recent finding of the significance of TMR in determining prognosis, it is important that this feature be assessed by a standardized method and documented for all primary cutaneous melanomas.
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Affiliation(s)
- Richard A Scolyer
- Department of Anatomical Pathology, and Sydney Melanoma Unit, and the Melanoma and Skin Cancer Research Institute, Royal Prince Alfred Hospital, Sydney, NSW, Australia.
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