33 Special Types of Invasive Breast Carcinoma: Diagnostic Criteria ...

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Metaplastic breast carcinomas (MC) • ER/PR/HER2 “triple negative” (TN) (80% of cases) • 3-yr disease-free survival (DFS) 75.5% • 3-yr overall survival (OS) 86.3% • 3-year OS TNMC 93.4%; 93 4%; NTNMC 58.2% 58 2% (P = 00.007) 007) • With respect to DFS: no survival difference • Contrary to that for invasive ductal carcinoma • Jpn J Clin Oncol. 2009 Nov 3. [Epub ahead of print] Spindle-cell Carcinoma of the Breast • Most metaplastic cas clearly high-grade. • BUT, spindle-cell ca can be deceptively benign. • Misdiagnosed as nodular fasciitis, fibromatosis, granulation g tissue, , or squamous q metaplasia. p • Also can be misclassified as sarcoma. • YET, these spindle-cell cas show aggressive behavior like infiltrating duct carcinomas (NST). • 5-year survival for spindle-cell ca report at 64%. Spindle-Cell (Metaplastic) Breast Carcinoma • A malignancy capable of causing death. • Emphasized in 1981 by Gersel & Katzenstein. • Confirmed by Wargotz Sneige & others • Confirmed by Wargotz, Sneige, & others. • May appear deceptively benign – fasciitis-like. • Transition from SCCa to spindle cells present. • SCCa may be very, well differentiated & cystic. • Capillary-like tracery (angioid areas). • Tracery & spindle cells positive for keratin. 10/8/2011 82
Spindle-cell Carcinoma of the Breast (Metaplastic Carcinoma Variant) • Most metaplastic carcinomas are high-grade. • BUT, spindle-cell ca can be deceptively benign. • Misdiagnosed g as nodular fasciitis, , fibromatosis, , granulation tissue, or squamous metaplasia. • Also can be misclassified as sarcoma. • YET, these spindle-cell cas can show aggressive behavior like infiltrating duct carcinomas (NST). • 5-year survival for spindle-cell ca reported at 64%. Dx: High-grade SSarcomatoid t id Carcinoma Illustrative Case 10/8/2011 83
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33 Special Types of Invasive Breast
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Special Types of Invasive Breast Ca
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INVASIVE BREAST CARCINOMAS CONSIDER
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ER Neg. PR Neg. HER2 Neg. CK 5/6 Po
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Triple-negative Breast Carcinomas
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E-cadherin E-cadherin EGFR ++ ER ne
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ER/PR Positive HER2 Negative INVASI
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Tubulolobular Signet-ring Histiocyt
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Illustrative Example: 61 y/o female
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E-Cadherin ER PR 10/8/2011 17
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LCIS vs DCIS • Patients with lobu
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Examples of E-cadherin staining in
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Classic Low-grade DCIS - E-cadherin
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E-cadherin IHC CASE D 10/8/2011 25
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E-cadherin IHC CASE E 10/8/2011 27
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Literature Summary: Correlation of
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Page 35 and 36: CD10 SMA MIB-1 10/8/2011 33
Page 37 and 38: Carter et al. Cancer 1977 & 1983
Page 39 and 40: Differential Diagnosis: 1. Invasive
Page 41 and 42: 10/8/2011 39
Page 43 and 44: SYNAPTOPHYSIN SMA 10/8/2011 41
Page 45 and 46: Nassar et al. (AJSP 2006;30:501-7.)
Page 47 and 48: Special Types of Invasive Breast Ca
Page 49 and 50: Tubular carcinoma • It has been d
Page 51 and 52: Tubular carcinoma Histopathology
Page 53 and 54: Flat Epithelial Atypia When should
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Page 59 and 60: Treatment • Breast conservation t
Page 61 and 62: Cribriform carcinoma Histopathology
Page 63 and 64: Cribriform carcinoma Prognosis •
Page 65 and 66: Cribriform Carcinoma Pearls of Path
Page 67 and 68: Clinicopathological features Mucino
Page 69 and 70: Case 4 Mucinous carcinoma Mixed muc
Page 71 and 72: Treatment • Breast conservation a
Page 73 and 74: Incipient mucocele-like lesion Cyst
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Page 79 and 80: SMA Dx: Spindle-cell Breast Carcino
Page 81 and 82: Dx: Pure Squamous Carcinoma 10/8/20
Page 83: Osseous Differentiation (Osteosarco
Page 87 and 88: Phyllodes y Tumors Phyllodes Tumor
Page 89 and 90: Diagnosis: Benign g (Low-grade) Phy
Page 91 and 92: Diagnosis: Malignant (High-grade) P
Page 93 and 94: 10/8/2011 91
Page 95 and 96: 10/8/2011 93
Page 97 and 98: Illustrative Case 10/8/2011 95
Page 99 and 100: SMA Calponin 10/8/2011 97
Page 101 and 102: Dx: Mixed Spindle-cell & Cl Classic
Page 103 and 104: Dx: Adenomyoepithelioma, Epithelioi
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Page 109 and 110: Case 1 • 40 year old female • B
Page 111 and 112: What is your diagnosis? 1. Invasive
Page 113 and 114: Case 4 • Irregular large breast m
Page 115 and 116: Case 6 • Needle core biopsy of a
Page 117 and 118: 343 What is your best diagnosis? 1.
Page 119 and 120: 349 Case 9 What is your diagnosis?
Page 121 and 122: Case 11 Case 11 Case 12 • A 68 ye
Page 123 and 124: Case 13 • Needle core biopsy of a
Page 125 and 126: What is your diagnosis? 1. Intracys
Page 127 and 128: What is your best interpretation? 1
Page 129 and 130: Case 18 What is your best interpret
Page 131 and 132: Case 20 • 35 year old female with
Page 133 and 134: Negative ER stain NEG ER Case 22
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What is your best interpretation? 1
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What is your diagnosis? 1. Secretor
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American Soiety of Clinical Patholo
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SPECIAL TYPES OF INVASIVE BREAST CA
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INVASIVE BREAST CARCINOMAS THAT ARE
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of lymphoid cells between sheets of
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studied, this taxonomy identifies s
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molecular subtypes. Indeed, the pea
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In summary, basal-like breast cance
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Page et al. (15) described a pleomo
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The classical pattern of infiltrati
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pathologic findings indistinguishab
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east carcinomas with overlapping fe
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standard" LCIS (their figure 2), wh
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References (lobular carcinoma): 1.
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25. Richter GO, Dockerty MB, Claget
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Breast Cancer Cooperative Group). L
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invasive micropapillary carcinoma m
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whether these lesions are in situ o
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irregular margin suggests the prese
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ich in elastic fibers. The connecti
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(i.e., much better than an antibody
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outcome of patients with intracysti
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Case 3: History: A 73 year old fema
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cases. In this small tubular carcin
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carcinoma in almost all tubular car
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Sclerosing papillary proliferations
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9. Bondeson L, Lindholm K. Aspirati
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43. Green I, McCormick B, Cranor M,
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mucinous carcinoma (7,11,12,14). In
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mucinous carcinoma. A fine-needle a
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with long-term follow-up [Abstract]
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cystic hypersecretory duct carcinom
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considerable secretion and/or morph
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4. Tavassoli FA, Norris HJ. Secreto
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Case 6: History: 66 year old female
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Adenoid cystic carcinoma (AdCC) is
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Because more than half of adenoid c
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Another family of salivary gland-ty
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Collagenous spherulosis is a recent
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cases: review of the literature and
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Case 7 the breast associated with l
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size (14). Metaplastic breast carci
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adenoma by others who prefer to avo
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survival rate than is usually repor
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it arises in other soft tissue site
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implies a relative risk for develop
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sclerosing adenosis wherein the str
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overgrowth (136). While acknowledgi
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As noted above, any soft-tissue sar
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J Med 73:1078-1082, 1973. 11. Barne
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40. Thorner PS, Kahn HJ, Baumal R,
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75. Fekete P, Petrek J, Majmudar B,
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microscopic, ultrastructural, and i
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2006 Apr;30(4):450-6 143. Liberman
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Case 8 Case history: A 50 year old
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secondary peripheral tumor nodules
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Definitive diagnosis of medullary c
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Pathol 1988;19:1340-6. 12. Rosen PP
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40. Di Bonito; Royen PM, Ziter FMH.
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Am J Clin Pathol 1979;72:383-389. 1
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33 Special Types of Invasive Breast Carcinoma: Diagnostic Criteria ...

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