Advances in Pancreatic Cytology - USCAP · Pitman MB, Schmidt MC, Shimizu M, Wolfgang CL, Yamaguchi...
Transcript of Advances in Pancreatic Cytology - USCAP · Pitman MB, Schmidt MC, Shimizu M, Wolfgang CL, Yamaguchi...
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Advances in Pancreatic Cytology
Martha B. Pitman, MD
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PRESENTATION TITLE
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PRESENTATION TITLE
Disclosure of Relevant Financial Relationships
Medtronic,Inc.ConsultantBostonScientific,Consultant
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PRESENTATION TITLE
AdvancesinPancreaticDiseasethatimpactCytology• Neoadjuvanttherapyforpancreaticcancer
• Definitivediagnosisrequired• FNAspecimen=onlytumoravailableforthatpatientaftertreatmentinsomecases
• ConservativemanagementformostBD-IPMN• NewPBterminologyandintegratedcytologyreportssupportthiseffort• Moray™Micro-ForcepsBiopsy
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PRESENTATION TITLE
NeoadjuvantTherapyforborderlineresectablePDAC
• FOLFIRINOX(5-fluorouracil/leucovorin/irinotecan/oxaliplatin)chemotherapy
• +/- Gemcitibineorotherchemotherapy• +/-radiationtherapy
• Potentialtochange10-20%ofborderlineresectablediseasetoresectable
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Post-neoadjuvant therapy with complete response
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EUS-guided FNA• Technique of choice• Controversial• Requires significant
experience for quality aspiration and interpretation
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Quality FNA
Quality specimenHigh cellularity
Cells representative of the lesionQuality preparations
Quality interpretationTraining of interpreter
Experience of interpreterTeam approach to diagnosis
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Second Opinion:Expert Consultation
• Recommended for indeterminate diagnoses that would lead to repeat biopsy
• Issues noted in my practice:– FNA is diagnostic but pathologist lacks
experience and confidence to make a definitively malignant diagnosis
• Mostly well-differentiated PDAC– CB is diagnostic but only on levels and/or with
support from IHC
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Optimal Preparation of EUS-FNAB of Solid Masses
• Direct Smears (ROSE)– Alcohol fixed– Air dried
• Cell Block Preparations– Rinsings and dedicated pass into RPMI or formalin– Enrich material with large bore needle (19g) or pro-core– If cellularity appears too scant for cell block, process
fluid as cytospin, ThinPrep or SurePath• Dedicated pass for flow cytometry if lymphoma is
suspected or lymphoid dominant lesion noted on rapid interpretation
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EUS-FNAB
Needle ridges Sharp stylet Beveled needle
Smaller transducers Sharper needles Disposable needles
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Newer Needles
Acquire- Boston Scientific
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Cytohistology
Poorly-differentiated PDACAutoimmune pancreatitis
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Differential Diagnosis of Solid Pancreatic Masses
• Solid– Chronic pancreatitis– Ductal adenocarcinoma– Metastasis– Pancreatic neuroendocrine
tumor– Acinar cell carcinoma– Pancreatoblastoma– Solid-pseudopapillary
neoplasm
CP
Images: AFIP Pancreas fascicle 2007
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High Grade Adenocarcinoma
• Marked nuclear– atypia– hyperchromasia– pleomorphism– overlapping
• Prominent nucleoli• Single atypical cells• Mitoses• Coagulative Necrosis
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Well-Differentiated PDAC
Image courtesy of Dr. Volkan Adsay
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Criteria for Well-differentiated Adenocarcinoma
• Irregular cellular distribution in a sheet (drunken honeycomb)
• Anisonucleosis 4:1 in a group• Parachromatin clearing• Irregular nuclear membranes, often subtle• Abundant cytoplasm, often visibly mucinous
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Well-differentiated Adenocarcinoma
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Well-differentiated Adenocarcinoma
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Well-differentiated Adenocarcinoma
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Well-differentiated Adenocarcinoma
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ProCore:Well-differentiated Adenocarcinoma
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Core Biopsy
Shark Core: Well-differentiated Adenocarcinoma
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Well-differentiated Adenocarcinoma: Cellbock
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Well-differentiated Adenocarcinoma: Cellblock
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Well-differentiated Adenocarcinoma: p53
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Well-differentiated Adenocarcinoma: ki-67
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Well-differentiated Adenocarcinoma: SMAD4 nuclear loss
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PRESENTATION TITLE
AdvancesinPancreaticDiseasethatimpactCytology• Neoadjuvanttherapyforpancreaticcancer
• Definitivediagnosisrequired• FNAspecimen=onlytumoravailableforthatpatientaftertreatmentinsomecases
• ConservativemanagementformostBD-IPMN• NewPBterminologyandintegratedcytologyreportssupportthiseffort• Moray™Micro-ForcepsBiopsy
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Intraductal Papillary Mucinuos Neoplasm
Intra-ductal Branch duct IPMN Combined disease
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•Variously papillary mucinous epithelium of variable cell type and heterogenous atypia•No association with ovarian-like stroma under the epithelium
AFIP 4th Series Fascicle
IPMN
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Pancreatic Cysts• Differential Diagnosis
– Pseudocyst– Lymphoepithelial cyst– Serous cyst– Mucinous cyst
• (MCN and IPMN)
– Cystic degeneration of typically solid tumors
• PanNET• SPN• other
– Other more rare cysts
radiologyassistant.nl
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Surgical proceduresWhipple
Middle pancreatectomy
Distal pancreatectomy
Other
Frequency, (%) 368, (43.2%) 63, (7.4%) 373, (43.8%) 47, (5.5%)
Complications (%) 40% 49.2% 36.4% 32.4%
Pancreatic fistula 12.5% 35.5% 18.2% 8.8%Delayed gastric emptying
6.5% 0% 0.3% 0%
Other major complication
12.9% 12.7% 12.6% 11.8%
Median length of stay, days
8 days 6 days 6 days 8 days
Operative mortality, n 2 0 1 1
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MCN MDIPMN
BD IPMN SCA CNET SPN
n 199 180 146 137 62 29Malignant (%) 10.3% 33.7% 13.7% 0.0% 10.7% 0.0%Outcome
3-year survival (%) 94.0% 83.0% 88.0% 97.0% 98.0% 100.0%
5-year survival (%) 90.0% 78.0% 80.0% 90.0% 98.0% 100.0%
Outcomes
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TheInternationalConsensusGuidelines2012fortheManagementofIPMNandMCNofthePancreasTanakaM,Fernandezdel-CastilloC,AdsayV,ChariS,FalconiM,JangJ-Y,LevyP,PitmanMB,SchmidtMC,ShimizuM,WolfgangCL,YamaguchiK,YamaoK.Pancreatology,2012May-Jun;12(3):183-97.
• HighRiskStigmata Surgeryifclinicallyfeasible– Obstructivejaundiceinapatientwithacystinthepancreatichead– Enhancingsolidcomponentofthecyst– Mainpancreaticductdilatation≥10mm
• WorrisomeFeatures EUS-FNA– Cyst≥3cm– Thickened/enhancingcystwalls– Mainduct5-9mm– Non-enhancingmuralnodule– AbruptchangeinMPDsizewithdistalpancreaticatrophy
• EUS-FNA Susp/Poscytology Surgery
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MCN Pseudocyst IPMN
Cohen-Scali F et al. Radiolgy 2003 Khurana B et al. AJR 2003
Kim S et al. AJR 2006
Challenges in Cyst Characterization by CT: Morphologic Overlap
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Nonspecific EUS Imaging• Broad differential
diagnosis:– Mucinous
• BD-IPMN• MCN
– Nonmucinous• Macrocystic SCA• Lymphangioma
– Benign– Malignant (≥HGD)
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Small Cysts with “Benign” Imagingare not all low-grade
• Fritz S, Klauss M, Bergmann F, et al. Small (Sendai negative) branch-duct IPMNs: not harmless. Ann Surg. Aug 2012;256(2):313-320.
• Wong J, Weber J, B AC, et al. High-Grade Dysplasia and Adenocarcinoma Are Frequent in Side-Branch Intraductal Papillary Mucinous Neoplasm Measuring Less than 3 cm on Endoscopic Ultrasound. J Gastrointest Surg. Jan 2013;17(1):78-85.
• Pelaez-Luna M, Chari ST, Smyrk TC, et al. Do consensus indications for resection in branch duct intraductal papillary mucinous neoplasm predict malignancy? A study of 147 patients. Am J Gastroenterol. Aug 2007;102(8):1759-1764.
• Pitman, M. B., P. J. Michaels, et al. (2008). "Cytological and cyst fluid analysis of small ≤3 cm) branch duct intraductal papillary mucinous neoplasms adds value to patient management decisions." Pancreatology8(3): 277-284.
• Tang RS, Weinberg B, Dawson DW, et al. Evaluation of the guidelines for management of pancreatic branch-duct intraductal papillary mucinous neoplasm. Clin Gastroenterol Hepatol. Jul 2008;6(7):815-819; quiz 719.
• Woo SM, Ryu JK, Lee SH, Yoon WJ, Kim YT, Yoon YB. Branch duct intraductal papillary mucinous neoplasms in a retrospective series of 190 patients. Br J Surg. Apr 2009;96(4):405-411.
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HARVARDMEDICAL SCHOOL
MASSACHUSETTS GENERALPHYSICIANS ORGANIZATION
Two basic questions for Cyst analysis
1) Is the cyst mucinous or non-mucinous?
2) Is the cyst low-grade or high-grade?
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Mucinous HGA
IPMN with LGD
GI duplication cyst
Non-neoplasticMucinous cyst
Cystic PanNET
Cystic Acinar Cell carcinoma
SPN
IPMN/MCN with HGD
IPMN/MCN withInvasive carcinoma
Cystic PDAC
IPMN with IGD
PCTLECSCA
Surgery
MCN with LGD
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Value of EUS-FNA• Obtain fluid and tissue
– Biochemical testing (CEA, amylase)• Mucinous vs. non-mucinous
– Cytology• Mucinous vs. non-mucinous• Grade: low-grade/risk vs. High-grade/risk
– Molecular analysis• Gene mutations
– neoplasia– late mutations associated with high-risk
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Cytology Interpretation• Multimodal Approach
– Clinical Information• Patient age and gender• Symptoms• Past medical history
– Radiological Information• Location of mass in the pancreas (and thus organ traversed for
EUS)• Mass characteristics
– Solid or cystic» Size, contours, invasion» Cyst structure: uni- or multilocular; thick/thin wall, Ca++,
nodule/mass in the wall» Gross cyst contents: thick, viscous, thin, water, clear, brown
– Ancillary tests: CEA, amylase, molecular analysis
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HARVARDMEDICAL SCHOOL
MASSACHUSETTS GENERALPHYSICIANS ORGANIZATION
Cytological Preparations
• Cysts• Direct smears
• If fluid thick enough
• Fresh undiluted cyst fluid• CEA; Amylase• Molecular • Cytology
• Cytospin• Cellblock
No-ROSE
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HARVARDMEDICAL SCHOOL
MASSACHUSETTS GENERALPHYSICIANS ORGANIZATION
Pancreatic Cyst Fluid Triage
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HARVARDMEDICAL SCHOOL
MASSACHUSETTS GENERALPHYSICIANS ORGANIZATION
Two basic questions for Cyst analysis
1) Is the cyst mucinous or non-mucinous?
1) Gross examination2) CEA (best test)3) Cytology
2) Is the cyst low-grade or high-grade?
1) Cytology!!
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HARVARDMEDICAL SCHOOL
MASSACHUSETTS GENERALPHYSICIANS ORGANIZATION
Gross Cyst Fluid
Mucinous cyst fluid Pseudocyst fluid
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Acellular thick, colloid-like mucin is NOT non-diagnostic!
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HARVARDMEDICAL SCHOOL
MASSACHUSETTS GENERALPHYSICIANS ORGANIZATION Mucin with LBC processing
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HARVARDMEDICAL SCHOOL
MASSACHUSETTS GENERALPHYSICIANS ORGANIZATION
CEA cut-off levels: lab and study dependent(van der Waaij, et. al. Cystfluid analysis in the differential diagnosis of pancreatic cystic lesions: a pooled
analysis. Gastrointes Endosc. 2005; 62:383)
192 ng/ml
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HARVARDMEDICAL SCHOOL
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Molecular Tests • KRAS
• Mutation(s) support a neoplastic mucinous cyst• Does not distinguish IPMN and MCN• Does not correlate with grade
• GNAS• Mutation supports IPMN over MCN
• Does not correlate with grade• RNF43
• Mutation supports a mucinous cyst• Does not distinguish IPMN and MCN
• 3p deletions• 3p25, VHL gene, supports SCA• Other 3p deletions also noted in SCA
• CTNNB1 (beta-catenin) deletion• Mutation(s) support SPN
• TP53, CDKN2A loss SMAD4 loss support a HR cyst
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HARVARDMEDICAL SCHOOL
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• NGS supported the imaging impression in 78% but changed it in 12%
• NGS defined a cyst as mucinous in 48% of cysts with a non-elevated CEA
• KRAS and/or GNASmutations supported a diagnosis of IPMN in 71% of cases without an elevated CEA
• KRASmutation reclassified 19% of cysts non-neoplastic by imaging and with low CEA
Impact of Next-Generation Sequencing on the Clinical Impression of Pancreatic Cysts
1Massachusetts General Hospital, Department of Pathology, Boston, MA, United States | 2Massachusetts General Hospital, Department of Medicine, Boston, MA, United States | 3Massachusetts General Hospital, Department of Surgery, Boston, MA, United
Martin Jones, MBBS1*, Zongli Zheng, MD, PhD1*, Jessica Wang, MD1, Emily Albanese1, Abdurrahman Kadayifci, MD2, Dora Dias-Santagata, PhD1, Long Le, MD1, William R. Brugge, MD2, Carlos Fernandez-del Castillo, MD3, Mari Mino-Kenudson1, MD, A. John
Iafrate, MD, PhD1^, and Martha Pitman, MD1^ States | *Co-first authors | ^Co-senior authorsGastrointestinal Endoscopy (in press)
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HARVARDMEDICAL SCHOOL
MASSACHUSETTS GENERALPHYSICIANS ORGANIZATION
Two basic questions for Cyst analysis
1) Is the cyst mucinous or non-mucinous?
1) Gross examination2) CEA (best test)3) Cytology
2) Is the cyst low-grade or high-grade?
1) Cytology!!
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HARVARDMEDICAL SCHOOL
MASSACHUSETTS GENERALPHYSICIANS ORGANIZATION
Ideal World- Recognize HGD
with accuracy
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HARVARDMEDICAL SCHOOL
MASSACHUSETTS GENERALPHYSICIANS ORGANIZATION
Diagnostic Morphology of Carcinoma
Already invasive- prognosis decreases ~50%
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Epithelial Cells with HGA
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Histologically Confirmed LGD-IGD
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Cytological Criteria of High-Grade Epithelial Atypia in the Cyst Fluid of Pancreatic Intraductal Papillary
Mucinous NeoplasmsMartha B. Pitman, MD, Barbara A. Centeno, MD, Ebubekir S. Daglilar, MD,
William R. Brugge, MD, and Mari Mino-Kenudson, MDCancer Cytopathology 2014;122(1):40-47.
HGA is most accurately identified in mucinous cyst fluids by:1. an increased N/C ratio, 2. an abnormal chromatin pattern 3. background necrosis
Reference duodenal enterocyte Low-grade High-grade
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Benign/Low Grade Glandular Epithelium
High-Grade Atypical Epithelial Cells in Pancreatic Mucinous Cysts are a More Accurate Predictor of Malignancy than “Positive” CytologyMartha Bishop Pitman M.D, et.al. (Cancer Cytopath 2010)
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HARVARDMEDICAL SCHOOL
MASSACHUSETTS GENERALPHYSICIANS ORGANIZATION
Cytohistology: CB
IPMN-HGA IPMN-LGA
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HARVARDMEDICAL SCHOOL
MASSACHUSETTS GENERALPHYSICIANS ORGANIZATION
Moray™ Micro-forceps biopsy
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HARVARDMEDICAL SCHOOL
MASSACHUSETTS GENERALPHYSICIANS ORGANIZATION
Ancillary Tests: IPMN/MCN• IHC insufficiently specific to be diagnostic of
grade in premalignant cysts• SMAD4 loss does tend to support HGA -
loss of nuclear staining
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MASSACHUSETTS GENERALPHYSICIANS ORGANIZATION
HARVARDMEDICAL SCHOOL
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Standardized Terminology and Nomenclature for Pancreaticobiliary Cytopathology from the
Papanicolaou Society of Cytopathology
I. NondiagnosticII. Negative: Normal pancreatic tissue, splenule, LEC, pancreatitis (AIP)
III. Atypical: Suggestive but not diagnostic of NET or SPN; indeterminate bile duct lesions
IV. Neoplastic-Benign: SCA, NET microadenoma
-Other: IPMN, MCN, PanNET, SPN
V. Suspicious: Suggestive but not diagnostic of PDAC, Acinar Cell Ca., PanNEC
VI. Positive/Malignant: PDAC, Acinar Cell Ca., PanNEC
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Neoplastic: Other
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PRESENTATION TITLE
Important Information Regarding CME/SAMs
The Online CME/Evaluations/SAMs claim process will only be available on the USCAP website until
September 30, 2017.
No claims can be processed after that date!
After September 30, 2017 you will NOT be able to obtain any
CME or SAMs credits for attending this meeting.
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PRESENTATION TITLE