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- B1803少见乳腺肿物，鉴别诊断？ (cqz-18, 5-7-2009)
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about 60 y/f, right breast mass 2 cm by imaging, breast core biopsy.
1. Your differential diagnosis?
2. What will you do next?
Please do not just give a diagnosis. Your dx is a guess dx even though your diagnosis may be right.
As pathologists we should learn how to analyse our cases with logic thought.We should have differential dx for all cases in our mind even for the easy cases. We can use available sources (such as IHC, molecular methods, history, consultation) to rule in or rule out the differential dx, then make the final dx.
Learning the priniciple for diagnosis is much more important than learning a few cases.
标签：乳腺化生性癌 叶状肿瘤 平滑肌肉瘤 肉瘤 鉴别 ck7 VIM
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本帖最后由 于 2009-05-07 18:28:00 编辑
相关帖子
×参考诊断
Leiomyosarcoma of the breast（乳腺平滑肌肉瘤）
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Sarcoma. 2002;6(1):47-50.
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Leiomyosarcoma of bone arising in association with a bone infarct.
Department of Pathology Nuffield Department of Orthopaedic Surgery University of Oxford Nuffield Orthopaedic Centre Oxford OX3 7LD UK.
Both primary leiomyosarcoma of bone and sarcoma arising in association with a bone infarct are rare events. In this case report we describe for the first time a case of leiomyosarcoma arising in a bone infarct. The tumour arose in a medullary infarct in the proximal femur of an elderly patient. As in other cases of sarcoma arising in a bone infarct, the prognosis was poor, the patient dying within 6 months of diagnosis.
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Clin Imaging. 2008 Jul-Aug;32(4):321-5.
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Primary leiomyosarcoma of bone: a report on three patients.
Department of Orthopaedic Surgery and Traumatology, Fatih University, Alparslan Turkes Caddesi No. 57, 06510 Emek/Ankara, Turkey. atalarhakan@yahoo.com
Primary leiomyosarcoma of bone is a rare aggressive tumor that occurs mainly in older people. It resembles other malignancies clinically and radiologically, and differential diagnosis is based on histopathology, including immunohistochemistry. If leiomyosarcoma is found in bone, the possibility that it is a metastasis from a distant tumor should be investigated. The treatment is surgical excision with wide margins. Here we present three patients who had primary leiomyosarcoma of radius, ilium, and femur, respectively, and who were treated surgically
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West Indian Med J. 2007 Dec;56(6):555-7.
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Primary leiomyosarcoma of the tibia--five years without recidivism.
Orthopaedic Clinical Hospital, Lovran, Croatia. branko.sestan1@ri.htnet.hr
Primary leiomyosarcoma of the bone is a rare malignancy. Clinical follow-up suggests that primary osseous leiomyosarcoma has an aggressive biologic behaviour with poor survival time. We report a case of primary leiomyosarcoma arising from the proximal metaphysis of the right tibia of a 55-year old woman with a long follow-up period, without recidivism. Primary leiomyosarcoma has to be considered as a differential diagnostic possibility in the case of bone tumours seen on routine initial plain radiographs as lytic lesions. If the tumour has been adequately excised at the time of diagnosis, as in the present case, with adjuvant therapy protocol, the long-term prognosis of such an aggressive tumour can be exceptionally good
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Breast. 2001 Dec;10(6):530-4.
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Primary leiomyosarcoma of the breast: diagnosis, management and outcome. A report of a new case and review of literature.
The Breast Surgery Unit, Belfast City Hospital, Lisburn Road, Belfast BT9 7AB, UK.
Primary leiomyosarcoma of the breast is very rare and represents a diagnostic challenge. Only 16 cases have been reported in the English language literature. We report another new case and have analysed reports of the previous cases aiming to present a simple evidence-based approach to the clinical, radiological and pathological diagnosis of this rare tumour. The average age of presentation is 56 years. All neoplasms have been limited to the breast at the time of diagnosis. The usual presentation is a slowly growing mass, but in the current case report the patient present with mastalgia. There is always a possibility of local recurrence or distant spread, which can occur many years after primary surgery. Leiomyosarcoma must be histologically distinguished from leiomyoma and the presence of >3 mitoses per 10 high-power fields is usually indicative of malignancy. Immunohistochemistry is helpful to confirm diagnosis. As this is a slow-growing malignant tumour with a propensity for local recurrence, total mastectomy is the treatment of choice. The tumour is not hormone-dependent and hormone manipulation is not a treatment option.
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Cancer Genet Cytogenet. 2004 Feb;149(1):53-7.
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Leiomyosarcoma of the breast: a pathologic and comparative genomic hybridization study of two cases.
Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
Leiomyosarcoma is an extremely rare form of primary breast sarcoma. We present the pathologic and genetic findings of two cases of leiomyosarcoma of the breast. The patients were 44 and 52 years of age and they presented with circumscribed masses of 3.0 and 4.5 cm, (greatest dimension) respectively. Microscopically, the two tumors showed diffuse proliferation of spindle cells with oval and blunt-ended nuclei arranged in short fascicles or bundles. There was moderate cytologic atypia in both cases, and 6 and 12 mitotic figures per 10 high power fields, respectively. No epithelial component was identified. The tumor cells were strongly immunoreactive for markers of smooth-muscle differentiation, including desmin, muscle-specific actin, and smooth-muscle actin. Comparative genomic hybridization analysis showed losses of 10q (two of two cases), 13q (two of two cases), 17p (one of two cases), and gains of 1q (one of two cases) and 17p (one of two cases). The patterns of chromosomal imbalances identified in leiomyosarcoma of the breast are similar to those reported in leiomyosarcoma of soft tissue and uterus and are different from those reported for leiomyoma, indicating that these alterations may be important for development of malignant smooth-muscle tumors regardless of site or organ of origin.
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Br J Cancer. 2004 Jul 19;91(2):237-41.
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Primary breast sarcoma: clinicopathologic series from the Mayo Clinic and review of the literature.
Department of Anatomic Pathology, Pitie Salpetriere Hospital, Paris, France. camilo.adem@psl.ap-hop-paris.fr
Primary sarcomas of the breast are extremely rare, with less than 0.1% of all malignant tumours of the breast. Mayo Clinic Surgical Pathology database was searched for all breast sarcoma from 1910 to 2000. Pathology reports and slides were reviewed and tumour types were determined. Metaplastic carcinomas and phyllodes tumours were excluded. There were 25 women ranging in age 24-81 years (mean 45 years). All but one patient presented with a palpable lump. Mastectomy was performed in 19 patients and lumpectomy in five patients. Histopathological diagnoses were fibrosarcoma (six), angiosarcoma (six), pleomorphic sarcoma (six), leiomyosarcoma (two), myxofibrosarcoma (three), hemangiopericytoma (one) and osteosarcoma (one). Tumour size ranged from 0.3 to 12 cm (mean 5.7). Low-grade lesions were observed in 10 cases and high-grade in 15. Overall, mean follow-up was 10.5 years. Local recurrence was observed in 11 patients and ranged from 2 to 36 months (mean 15 m), while distant metastasis was observed in 10 patients (40%) affecting lungs, bones, liver, spleen, and skin. Of the 25 patients, 12 have died of disease and six of other causes. Five-year overall (OS) and cause-specific survival (CSS) were 66 and 70%, respectively. OS and DFS at 5 years were 91% for tumours < or =5 cm and 50% for tumours >5 cm. Tumour size was significantly associated with OS (risk ratio=1.3 per 1 cm increase; 95% CI, 1.02-1.7; P=0.036). There was no significant difference in OS or CSS between low- and high-grade lesions. In this series, tumour size was a more valuable prognostic factor than tumour grade
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Medicina (B Aires). 2006;66(2):135-8.
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[Primary sarcomas of the breast]
[Article in Spanish]Departamento de Anatomía Patológica, Instituto de Oncología Angel H Roffo, Facultad de Medicina, Universidad de Buenos Aires.
Primary sarcomas of the breast are extremely rare with less than 1% of all malignant tumours of the breast reported in literature. At our Institution 1315 malignant tumours of the breast were diagnosed between 1999-2004; nine of them corresponded to primary sarcomas: angiosarcoma (3), leiomyosarcoma (1), low-grade fibromyxoid sarcoma (1), dematofibrosarcoma protuberans (1), liposarcoma (1), osteosarcoma (1), malignant peripheral nerve sheath tumour (1). Histopathological specimens stained with routine techniques and immunoperoxidase were reviewed; proliferation index and p53 over-expression were also determined. Patients' clinical reports were also reviewed to determine prognosis (favorable and unfavorable). The incidence observed (0.7%) is similar to those already published by others authors. Proliferation index was correlated with type of evolution, being an unfavourable prognosis factor when it was equal or major to 30%. Most of the tumours (67%) showed p53 (mayor or equal to 20% of nuclear staining) over-expression but this did not show a direct relationship with the evolution of each neoplasm
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本帖最后由 于 2009-05-24 20:21:00 编辑
One thing i want to mention is that CD31 is senstitive, but not specific for vascular lesion, CD34 is relative specific for vascular lesion. Of cause many soft tissue tumors and others are positive for CD34. Above case is a good example, CD31 positive, CD34 negative.
D2-40 is good for lymphatic endothelium, often used for confirmoring lymphavascular invasion for breast ca.
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本帖最后由 城北 于 2020-03-16 17:07:09 编辑
More IHC results
SMA
Smooth muscle myosin heavey chain
Muscle specific actin (HHF35)
Desmin
Cd31
Cd34
caldesmon
名称：SMA
描述：SMA
名称：SMHHC
描述：SMHHC
名称：HHF35
描述：HHF35
名称：Desmin
描述：Desmin
名称：Cd31
描述：Cd31
名称：CD34
描述：CD34
名称：caldesmon
描述：caldesmon
