scholarly journals Spindle-Cell Lesions of the Breast with Emphasis on the Differential Diagnosis

2014 ◽  
Vol 4 (1) ◽  
pp. 95-100
Author(s):  
Shi Wei ◽  
Omar Hameed
Keyword(s):  
Differential Diagnosis ◽  
Spindle Cell

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.

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.

Leiomyosarcoma of the Foot

2007 ◽  
Vol 97 (6) ◽  
pp. 475-479 ◽  
Author(s):  
Erin Engel ◽  
Michael Butler ◽  
Joseph Anain
Keyword(s):  
United States ◽  
Differential Diagnosis ◽  
Malignant Tumor ◽  
Clinical Presentation ◽  
Spindle Cell ◽  
Pyogenic Granuloma ◽  
The United States ◽  
Spindle Cell Sarcoma ◽  
Cell Sarcoma ◽  
History Of

Leiomyosarcoma is a very rare malignant tumor, with only 28 new cases diagnosed in the United States each year. The prognosis varies, with average 5-year survival of 65%. Although most leiomyosarcomas occur in the lower extremity, there is a paucity in the literature on these sarcomas in the foot. Only 15 cases of leiomyosarcoma in the foot have been reported in the literature since the mid-1930s. We describe a 31-year-old man with a history of an ingrown toenail and nonhealing pyogenic granuloma. His clinical presentation suggested atypical tissue. Biopsy findings confirmed the diagnosis of spindle cell sarcoma, specifically, leiomyosarcoma. The patient was treated with amputation of the affected hallux and adjuvant therapy. The similar presentations of a pyogenic granuloma and a malignant tumor necessitate a thorough differential diagnosis with even common foot ailments. (J Am Podiatr Med Assoc 97(6): 475–479, 2007)

scholarly journals Immunohistochemical features of gastrointestinal stromal tumors and their role for differential diagnosis and prognosis

2021 ◽  
pp. 10-16
Author(s):  
Yana Miroshnichenko
Keyword(s):  
Differential Diagnosis ◽  
Tumor Cells ◽  
Gastrointestinal Stromal Tumors ◽  
Spindle Cell ◽  
Prognostic Markers ◽  
Mitotic Rate ◽  
Mesenchymal Tumors ◽  
Ki 67 ◽  
Stromal Tumors ◽  
Strong Expression

The aim. To clarify all most important immunohistochemical features of gastrointestinal stromal tumors with different histological patterns and analyze the role of expression of Ki-67, MMP-9, VEGF and p16ink4A as a predictive markers of tumor progression. Materials and methods. The study is based on analysis of 100 primary GISTs for description of their morphological features and 36 GISTs taken from this 100 for study of prognostic markers. Results. All spindle cell GISTs have shown diffuse expression of CD117 in tumor cells. The levels of CD117 expression varied from strong expression (3+) until mild expression (1+). Strong expression were seen in 75,8 % of spindle cell GISTs. Epithelioid GISTs demonstrated heterognous moderate or mild expression of CD117. All primary epithelioid GISTs from patients that had relapse of tumor in period from 1 till 3 years demonstrated focal mild expression of CD 117 in tumor cells. Expression of DOG-1 were seen in all 100 cases of GISTs, that were included in our study. The strong expression of DOG-1 (3+) were seen in all 45 GISTs that had low mitotic rate (≤5 mitoses per 50HPF) and not associated with their histological pattern. GISTs with high mitotic rate demonstrated heterogeneous expression of DOG-1 in tumors: moderate expression (2+) with patchy areas of strong expression (3+). Expression of CD56 was not found in spindle cell GISTs, but single tumor cells of epithelioid GISTs that had high mitotic rate demonstrated expression of this marker. The average expression of p16ink4A were higher in tumors that gave relapses compared with tumors without relapses (50,3 % versus 5,7 % respectively, U-test=16.5; p≤0,01).The average expression of MMP-9 also were significantly higher in GISTs that gave relapses: 63,2 % compared with 13,4 % in GISTs without relapse (U-test=16; p≤0 ,01).The strong VEGF expression was found in 66,7 % of GISTs that had relapses and only in 8,3 % of GISTs without relapses. 50 % of GISTs without relapses was negative for VEGF. Finally, the average expression of Ki-67 were 13,4 % in GISTs with relapses and 8,7 % in GISTs without them (U-test=16; p≤0,01). Conclusion. We highly recommend using DOG-1 for epithelioid GISTs. Additionally in epithelioid GISTs can be used CD56 that can give focal positive reaction in some tumour cells. The following minimal panel of markers for differential diagnosis of spindled GISTs from other mesenchymal tumors of gastrointestinal tract is proposed: CD117, DOG-1 and SMA, where the first too markers will demonstrated the moderate or strong diffuse expression and SMA can be occasionally positive in some tumor cells. p16ink4A, ki-67, VEGF and MMP-9 can be used as additional prognostic markers in GISTs.

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