scholarly journals Cellular Spindled Histiocytic Pseudotumor: A Benign Mimic of Spindle Cell Neoplasia of the Breast

2019 ◽  
Vol 143 (12) ◽  
pp. 1497-1503
Author(s):  
Ellen G. East ◽  
Cody S. Carter ◽  
Andrew P. Sciallis
Keyword(s):  
Differential Diagnosis ◽  
Spindle Cell ◽  
Data Sources ◽  
Fat Necrosis ◽  
Ancillary Studies

Context.— Cellular spindled histiocytic pseudotumor (CSHPT) is an exuberant, dense histiocytic proliferation seen in the setting of mammary fat necrosis. CSHPT has a broad histologic differential diagnosis, including benign, malignant, and inflammatory etiologies. Objectives.— To highlight the most important histologic and immunohistochemical findings of CSHPT and provide comparisons to entities within the broad differential diagnosis. Data Sources.— Recently published literature regarding CSHPT and other diagnostic considerations. Conclusions.— CSHPT is a benign histiocytic proliferation with a broad differential diagnosis, for which comprehensive ancillary studies may be required to exclude malignant and infectious entities.

Benign spindle cell lesions of the breast: a diagnostic approach to solitary fibrous tumour, nodular pseudoangiomatous stromal hyperplasia and nodular fasciitis

2019 ◽  
Vol 72 (6) ◽  
pp. 438-442 ◽  
Author(s):  
Julia R Naso ◽  
Connie G Chiu ◽  
Michelle E Goecke ◽  
Debra Chang ◽  
Carolyn J Shiau
Keyword(s):  
Differential Diagnosis ◽  
Clinical Management ◽  
Core Biopsy ◽  
Spindle Cell ◽  
Solitary Fibrous Tumour ◽  
Accurate Diagnosis ◽  
Diagnostic Approach ◽  
Nodular Fasciitis ◽  
Pseudoangiomatous Stromal Hyperplasia ◽  
Ancillary Studies

Benign spindle cell lesions of the breast include neoplastic and reactive entities that are diagnostically challenging given their rarity and similar histomorphology. Accurate diagnosis on percutaneous core biopsy within this category is essential as some lesions require excision and surveillance, whereas others may be observed. We present three cases of rare benign spindle cell lesions of the breast that reflect the diversity of this group: solitary fibrous tumour, nodular pseudoangiomatous stromal hyperplasia and nodular fasciitis. Through these cases, we discuss the associated differential diagnosis and demonstrate how emerging ancillary studies can be integrated into a diagnostic approach. We highlight distinctive clinical and histopathological features and summarise recent updates to the clinical management of these lesions. An organised approach to the broad differential of spindle cell lesions is essential for appropriate diagnosis and treatment.

scholarly journals Mammary Hibernoma: A Rare Entity

2014 ◽  
Vol 139 (12) ◽  
pp. 1565-1567 ◽  
Author(s):  
Meghan P. Riley ◽  
Dipti M. Karamchandani
Keyword(s):  
Differential Diagnosis ◽  
Spindle Cell ◽  
Clinical Importance ◽  
Screening Mammography ◽  
Rare Entity ◽  
Inflammatory Conditions ◽  
Malignant Breast ◽  
Cell Variant ◽  
Histologic Types ◽  
Ancillary Studies

Hibernoma arising in the breast is rare and may present as an asymptomatic mass or may be detected by screening mammography. Four histologic types have been identified: typical, myxoid variant, spindle cell variant, and the lipoma-like variant. The most common “typical variant” is composed of pale to eosinophilic multivacuolated cells with interspersed univacuolar cells. Hibernomas are universally benign and are not known to recur or have an aggressive behavior, even in incompletely excised lesions. Hence, their clinical importance lies in distinguishing them from other benign and malignant breast neoplasms as well as inflammatory conditions that come into the histologic or radiologic differential. This review discusses the clinical features, radiologic and histopathologic characteristics, ancillary studies, suggested pathogenesis, differential diagnosis, and treatment of and prognosis for these uncommon lesions.

Placental Mesenchymal Dysplasia

2007 ◽  
Vol 131 (1) ◽  
pp. 131-137 ◽  
Author(s):  
Zahida Parveen ◽  
Jane Elaine Tongson-Ignacio ◽  
Cory R. Fraser ◽  
Jeffery L. Killeen ◽  
Karen S. Thompson
Keyword(s):  
Differential Diagnosis ◽  
Clinical Presentation ◽  
Early Recognition ◽  
Data Sources ◽  
Molar Pregnancy ◽  
Close Attention ◽  
Normal Fetus ◽  
Fetal Complications ◽  
Microscopic Features ◽  
Placental Mesenchymal Dysplasia

Abstract Context.—Placental mesenchymal dysplasia is characterized by placentomegaly and may be mistaken for molar pregnancy both clinically and macroscopically because of the presence of “grapelike vesicles.” It may be associated with a completely normal fetus, a fetus with growth restriction, or a fetus with features of Beckwith-Wiedemann syndrome. Objective.—To review the etiology, molecular pathology, gross and microscopic features, clinical presentation, complications, and differential diagnosis of placental mesenchymal dysplasia. Data Sources.—The PubMed and the Medline databases were systematically searched for articles between 1970 and 2006. The following keywords were used: placental mesenchymal dysplasia, mesenchymal hyperplasia, molar pregnancy, pseudomolar pregnancy, Beckwith-Wiedemann syndrome, and placentomegaly. Relevant references from review articles were also searched. Conclusions.—Placental mesenchymal dysplasia should be considered in the differential diagnosis when the ultrasonographic findings show a cystic placenta. Close attention should be paid to fetal morphology for early recognition of fetal complications and to prevent unnecessary termination of pregnancy in cases associated with a normal fetus.

scholarly journals Lipoma of the Thumb: Spindle Cell Subtype

2016 ◽  
Vol 2016 ◽  
pp. 1-3 ◽  
Author(s):  
Johnny El Rayes ◽  
Roula Bou Sader ◽  
Elie Saliba
Keyword(s):  
Differential Diagnosis ◽  
Soft Tissue ◽  
Clinical Examination ◽  
Spindle Cell ◽  
Excisional Biopsy ◽  
Spindle Cell Lipoma ◽  
Cell Subtype ◽  
Soft Tissue Swelling ◽  
Palmar Aspect

We report hereby the case of a 61-year-old man who presented with a soft-tissue swelling on the palmar aspect of the thumb. A detailed clinical examination followed by ultrasonography and excisional biopsy confirmed a spindle cell lipoma. Lipomas are rare in the hand and exceptional in the fingers, and we report, to our knowledge, the first spindle cell lipoma in the thumb to help in the differential diagnosis of a similar swelling.

Update on Nonneoplastic Pulmonary Lymphoproliferative Disorders and Related Entities

2010 ◽  
Vol 134 (5) ◽  
pp. 691-701 ◽  
Author(s):  
Donald G. Guinee
Keyword(s):  
Differential Diagnosis ◽  
Interstitial Pneumonitis ◽  
Lymphoid Hyperplasia ◽  
Lymphoproliferative Disorders ◽  
Data Sources ◽  
Follicular Bronchiolitis ◽  
Nodular Lymphoid Hyperplasia ◽  
Pulmonary Pathology

Abstract Context.—Recent discoveries have expanded the spectrum of nonneoplastic pulmonary lymphoproliferative disorders and have provided new insights into their pathogenesis and treatment. Objective.—To review the thoracic manifestations of immunoglobulin (Ig) G4–related sclerosing disease and summarize current concepts and differential diagnosis of follicular bronchiolitis, lymphocytic interstitial pneumonitis, and nodular lymphoid hyperplasia. Data sources.—Data sources include recent and old articles, cases from the personal files of the author, and cases borrowed with permission from other authors. Conclusions.—Additional studies will be needed to further refine and add to observations in this evolving area of pulmonary pathology.

Primary ovarian synovial sarcoma

2021 ◽  
Vol 14 (11) ◽  
pp. e244756
Author(s):  
Muhammad Amin ur Rahman ◽  
Khalid Al Wadi ◽  
Al Nuqaydan ◽  
Raghad Tallab
Keyword(s):  
Differential Diagnosis ◽  
Synovial Sarcoma ◽  
Molecular Pathology ◽  
Genital Tract ◽  
Spindle Cell ◽  
Female Genital Tract ◽  
Rare Occurrence ◽  
Spindle Cell Tumours ◽  
Spindle Cell Tumour ◽  
Female Genital

Synovial sarcoma (SS) has a rare occurrence in the female genital tract. Only three prior reports of primary ovarian sarcoma could be retrieved after a thorough literature review. We are reporting a case of primary ovarian SS in a young woman. The tumour showed monophasic spindle cell morphology, and there was a wide list of differential diagnosis to consider. We confirmed the diagnosis by cytogenetics Flourescent Insitu Hybridisation (FISH) technique to identify the classical translocation. The diagnosis of this disease can be challenging especially if the tumour is of monophasic type. Morphology and immunohistochemistry are not enough to confirm the diagnosis in many cases. A confirmatory molecular pathology test is paramount. We have discussed the differential diagnosis of spindle cell tumours in ovary. We suggest that SS should be in the differential diagnoses when facing any atypical spindle cell tumour in the ovary. Molecular pathology techniques can help to confirm the diagnosis.

Guidelines for Pathologic Diagnosis of Malignant Mesothelioma: A Consensus Statement from the International Mesothelioma Interest Group

2009 ◽  
Vol 133 (8) ◽  
pp. 1317-1331 ◽  
Author(s):  
Aliya N. Husain ◽  
Thomas V. Colby ◽  
Nelson G. Ordóñez ◽  
Thomas Krausz ◽  
Alain Borczuk ◽  
...  
Keyword(s):  
Differential Diagnosis ◽  
Interest Group ◽  
Malignant Mesothelioma ◽  
Consensus Statement ◽  
Spindle Cell ◽  
Cytologic Diagnosis ◽  
Pathologic Diagnosis ◽  
Practical Guidelines ◽  
Colonic Adenocarcinomas ◽  
Sarcomatoid Mesothelioma

Abstract Context.—Malignant mesothelioma (MM) is an uncommon tumor that can be difficult to diagnose. Objective.—To develop practical guidelines for the pathologic diagnosis of MM. Data Sources.—A pathology panel was convened at the International Mesothelioma Interest Group biennial meeting (October 2006). Pathologists with an interest in the field also contributed after the meeting. Conclusions.—There was consensus opinion regarding (1) distinguishing benign from malignant mesothelial proliferations (both epithelioid and spindle cell lesions), (2) cytologic diagnosis of MM, (3) key histologic features of pleural and peritoneal MM, (4) use of histochemical and immunohistochemical stains in the diagnosis and differential diagnosis of MM, (5) differentiating epithelioid MM from various carcinomas (lung, breast, ovarian, and colonic adenocarcinomas and squamous cell and renal cell carcinomas), (6) diagnosis of sarcomatoid mesothelioma, (7) use of molecular markers in the differential diagnosis of MM, (8) electron microscopy in the diagnosis of MM, and (9) some caveats and pitfalls in the diagnosis of MM. Immunohistochemical panels are integral to the diagnosis of MM, but the exact makeup of panels used is dependent on the differential diagnosis and on the antibodies available in a given laboratory. Immunohistochemical panels should contain both positive and negative markers. The International Mesothelioma Interest Group recommends that markers have either sensitivity or specificity greater than 80% for the lesions in question. Interpretation of positivity generally should take into account the localization of the stain (eg, nuclear versus cytoplasmic) and the percentage of cells staining (>10% is suggested for cytoplasmic membranous markers). These guidelines are meant to be a practical reference for the pathologist.

Hemangiopericytoma-like synovial sarcoma of the lumbar spine

2006 ◽  
Vol 4 (2) ◽  
pp. 179-182 ◽  
Author(s):  
Nikolaos Sakellaridis ◽  
Helen Mahera ◽  
Spiros Pomonis
Keyword(s):  
Differential Diagnosis ◽  
Cervical Spine ◽  
Lumbar Spine ◽  
Synovial Sarcoma ◽  
Spindle Cell ◽  
Cell Tumor ◽  
Spindle Cell Tumor ◽  
Deep Soft Tissue ◽  
Pathological Characteristics ◽  
The Brain

✓The purpose of this report is to demonstrate that synovial sarcoma should be included in the differential diagnosis of tumors originating from the lumbar spine, especially if they show hemangiopericytoma-like pathological characteristics. A synovial sarcoma is a mesenchymal spindle cell tumor that displays variable epithelial differentiation including glandular formation. It is unrelated to a synovium. More than 80% of these lesions arise in the deep soft tissue of the extremities. The tumor frequently arises adjacent to joints or tendon sheaths. The authors describe a young woman with a hemangiopericytoma-like tumor of the lumbar spine. During repeated operation, this lesion was shown to be a synovial sarcoma, which had invaded the dura mater. The tumor metastasized to the mediastinum and the intradural cervical spine and, finally, to the brain and the lungs. To the authors’ knowledge, this is the first reported case of a synovial sarcoma originating from the lumbar spine.

scholarly journals Cervical Lymph Node Schwannoma—An Unexpected Diagnosis

2019 ◽  
Vol 12 ◽  
pp. 2632010X1982923
Author(s):  
Catarina Falcão Silvestre ◽  
Joana Almeida Tavares ◽  
Dolores López-Presa ◽  
Vanessa Rebelo dos Santos ◽  
José Rocha ◽  
...  
Keyword(s):  
Differential Diagnosis ◽  
Lymph Node ◽  
Lymph Nodes ◽  
Cervical Lymph Node ◽  
Spindle Cell ◽  
English Literature ◽  
Abdominal Cavity ◽  
Neurofibromatosis Type ◽  
Benign Neoplasms

Introduction: Schwannomas—Schwann cells–originating tumors—may develop in many locations. However, primary schwannomas arising within lymph nodes are extremely rare, with only a few cases described to this date in the English literature. For the intranodal location, most of the cases are described in the abdominal cavity. In these cases, clinicians may consider and check for familial disorders, such as neurofibromatosis type 2 (NF2) and schwannomatosis also called neurofibromatosis type 3. Schwannomas are benign neoplasms. Histologically, differential diagnosis for spindle-cell lesions in lymph nodes is important and must be done carefully, mainly because they may be attributable to metastatic disease. We report a case of a primary schwannoma arising in a cervical lymph node. Background: Primary schwannomas arising within lymph nodes are extremely rare, with only a few cases reported. Since they are benign neoplasms, the differential diagnosis with other intranodal spindle cell lesions, mostly malignant, is important. Methods: An asymptomatic 69-year-old woman, previously submitted to left hemithyroidectomy for a benign folicular nodule, underwent thyroidectomy totalization following the identification of a large thyroid nodule in routine evaluation. Results: Gross and microscopic examination and ancillary studies were consistent with the diagnosis of intranodal schwannoma. The patient had acquired bilateral hypoacusia. Therefore, type 2 neurofibromatosis was considered and vestibular schwannomas ruled out. Conclusion: Herein, we present the second case of a primary schwannoma in a cervical lymph node reported so far. The relevance of the differential diagnosis is highlighted.

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