Journal of Pathology and Translational Medicine

Paediatric Primary Pachymeningeal Xanthogranuloma with Scattered Foci Displaying Reticulohistiocytoma-like Features: Miguel Fdo. Salazar, María del Rocío Estrada Hernández, Erick Gómez Apo, Laura G. Chávez Macías, Carlos Alfonso Rodríguez Álvarez; J Pathol Transl Med. 2015;49(5):403-408. Published online June 17, 2015; DOI: https://doi.org/10.4132/jptm.2015.05.28

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We report a unique case of a 4-year-old girl with an intriguing fibrohistiocytic tumour. Magnetic resonance imaging scans showed a dural mass of variegated intensity compressing the left occipital pole and apparently extending toward the superior sagittal sinus. Grossly, the cut surface of the surgical specimen was yellow, pale, and soft with reddish kernel-like crusts. Histologically, the yellow areas resembled cholesterol granulomas with widespread coagulative necrosis, cholesterol clefts, powdery calcification, foreign body-type giant cells, and foamy macrophages, while the scattered red spots contained numerous multinucleated giant cells of foreign-body and Touton types, the former with amphophilic to slightly eosinophilic cytoplasm. Immunoperoxidase reactions confirmed the expression of histiocytic markers and vimentin. As far as we know, no tumour displaying these peculiar morphological features has yet been described.

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Reticulohistiocytoses: a revision of the full spectrum
A. Bonometti, E. Berti
Journal of the European Academy of Dermatology and Venereology.2020; 34(8): 1684. CrossRef

Malignant Fibrous Histiocytoma Arising in a Mature Cystic Teratoma of the Ovary: A Case Report.: Soyoung Im, Sun Mi Lee, Ji Han Jung, Hyun Joo Choi, Jinyoung Yoo, Seok Jin Kang, Kyo Young Lee; Korean J Pathol. 2010;44(3):322-325.; DOI: https://doi.org/10.4132/KoreanJPathol.2010.44.3.322

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Abstract PDF: A 50-year-old female patient presented with anorexia and weight loss. Pelvic computed tomography revealed a 12.5 x 7.3 cm heterogeneous mass in the left ovary. About 30% of the tumor was occupied by a mature cystic teratoma. The remaining solid portion was composed of fibrous and histiocytic elements, arranged in storiform patterns admixed with bizarre giant cells. The mitotic index was 8 per 10 high power fields, including atypical mitoses. The only immunopositivity was for vimentin. The tumor was diagnosed as a malignant fibrous histiocytoma arising in a mature cystic teratoma. To the best of our knowledge, this is only the third such case in the English language literature.

Malignant Fibrous Histiocytoma of the Liver.: So Yeong Oh, Myoung Ja Chung, Sang Ho Kim; Korean J Pathol. 1997;31(1):59-62.

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Abstract PDF: Primary sarcomas of the liver are rare. A case of primary malignant fibrous histiocytoma of the liver is reported. A 55-year-old male was admitted with epigastric pain. An abdominal computed tomographic scan disclosed a 10cm, low-density area in the left lobe of the liver. Histological examination of the resected tumor showed bundles of spindle cells arranged in a storiform pattern. In some areas, many bizarre giant cells were scattered. Immunohistochemically, tumor cells were positive for alpha 1-antitrypsin and alpha 1-antichymotrypsin, and weakly positive for vimentin. The tumor cells did not express cytokeratin, desmin or alpha fetoprotein.

Characterization of Principal Component Cell of DMBA induced Rat Malignant Fibrous Histiocytoma With Cell Culture and Cloning.: Myeng Sun Park, Hae Jin Jeong, Man Ha Huh; Korean J Pathol. 1997;31(6):574-585.

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Abstract PDF: This experiment was performed to elucidate the cytologic origin of chemically induced MFH in Wistar rats. The tumor was produced by injections of DMBA(9,10-dimethyl-1,2-benzanthracene). With the produced MFH, cell culture and cloning were performed, followed by establishment of a cell strain, which was investigated by immunohistochemical and electron microscopic studies. The results were as follows. A) By immunohistochemistry of the tumor tissue, fibroblastic cells were positive for MEP-1(specific antibody for fibroblastlike cell of MFH, Takeya, 1993) and Anti-hPH(beta)(Anti-prolyl 4-hydroxylase beta), but negative for TRPM-3 and F4/80. Histiocytelike cells were positive for TRPM-3 and F4/80, but negative for MEP-1 and Anti-hPH(beta). In immunoelectron microscopy, normal spleen macrophage showed linear reactivity in cell membrane for TRPM-3, whereas histiocytelike cells of the tumor disclosed negative reaction. B) At 5 weeks of the primary tumor cell culture, the cells exhibited typical storiform pattern of MFH. C) The established cell strain revealed immunoreactivity for MEP-1 and Anti-hPH(beta), but negative for TRPM-3. The cloned tumor cells showed morphologic characteristics of undifferentiated fibroblastic cell. Latex particle (0.80 micrometer size) phagocytosis was negative in the cloned cell strain. The results of the current study support the concept that principal component cells of MFH is of fibroblastic cell origin.

Progression of Dermatofibrosarcoma Proruberans to Malignant Fibrous Histiocytoma: Report of a case.: Hye Rim Park, Eun Ha Jung, Jin Hee Sohn; Korean J Pathol. 1997;31(12):1324-1327.

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Abstract PDF: A 52-year-old woman was admitted with a palpable mass on the abdominal wall. This tumor had developed at the same site of a previously resected dermatofibrosarcoma protuberans. The biopsy specimen from the recurrent tumor revealed malignant fibrous histiocytoma. Immunohistochemistry with anti-CD34 antibody revealed diffuse linear positivity on the tumor cells of dermatofibrosarcoma protuberans and negativity on malignant fibrous histiocytoma. Anti CD34 antibody was valuable for a differential diagnosis of these two lesions.

Primary Malignant Fibrous Histiocytoma of the Liver: A case report.: Bum Kyeong Kim, Kyeong Hee Kim, Hye Jeong Sul, Dae Young Kang; Korean J Pathol. 1999;33(1):48-51.

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Abstract PDF: Malignant fibrous histiocytoma (MFH) of the liver is uncommon, representing less than 1% of the primary malignant lesions of the liver. We report primary MFH of the liver in a 59-year-old woman. The tumor, measuring 9.0 9.0 6.0 cm, was located in the left lobe of the liver. It showed multiple areas of hemorrhage and necrosis. Microscopically, the tumor consisted of plump spindle cells haphazardly arranged in short fascicle and focal storiform pattern. Multiple bizarre giant cells were also noted. Immunohistochemically, many of the tumor cells were positive for vimentin and alpha1-antitrypsin but negative for epithelial markers. Ultrastructurally, the tumor cells showed fibroblastic and histiocytic features.

Telomerase Activity and Expression of Telomerase RNA in Malignant Fibrous Histiocytoma.: Jinyoung Yoo, Seok Jin Kang, Bung Kee Kim; Korean J Pathol. 2000;34(8):581-587.

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Abstract PDF: Telomerase is an RNA-dependent DNA polymerase that synthesizes TTAGGG telomeric DNA onto chromosomal ends to compensate for sequence loss during replication. It has been detected in a variety of human malignancies, suggesting that such activity may play a role in the tumorigenic process. To determine whether telomerase is reactivated in malignant fibrous histiocytoma, 12 tissue samples with this tumor were analyzed for the telomerase activity by a radioactive PCR-based TRAP (telomeric repeat amplification protocol) assay. All of the tumors were further investigated for the expression of human telomerase RNA (hTR) by an in situ hybridization (ISH). Telomerase activity was detected in one (8.3%) sample. Expression of hTR was demonstrated in 7 (58.3%): one telomerase-positive and six telomerase-negatives. These data indicate that the reactivation of telomerase is an uncommon event and not an important factor involved in tumorigenesis in malignant fibrous histiocytoma. It is noteworthy that 50% of the patients with grade 2 tumors expressed hTR, suggesting that telomerase RNA may be useful as a marker for identifying tumor aggressiveness earlier than the conventional histopathologic grading scale.

ras Gene Mutations in Malignant Fibrous Histiocytoma.: Jinyoung Yoo, Ah Won Lee, Seok Jin Kang, Byung Kee Kim; Korean J Pathol. 2001;35(3):232-237.

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Abstract PDF: BACKGROUND
ras gene mutations have been described in various human malignancies, suggesting that their activation may play a role in oncogenesis. However, there are few reports concerning ras gene alterations in malignant fibrous histiocytomas. We therefore designed a study to determine the prevalence and type of mutations in the first exons of H-ras and K-ras genes in these tumors.
METHODS
Twenty-seven malignant fibrous histiocytomas were investigated by direct sequencing analysis with the automated DNA sequencing of polymerase chain reaction-amplified ras sequences.
RESULTS
Twenty-four mutations were found in 18 (67%) of the tumors: GGC to GAC transition mutations at codon 13 of K-ras (coding for aspartic acid instead of glycine) in 18 of the samples and GGC to GTC transversions at codon 12 of H-ras (coding for valine instead of glycine) in six of the lesions.
CONCLUSIONS
Our data suggest an involvement of the ras gene mutation in conjunction with other yet unknown events in the tumorigenesis and/or progression of malignant fibrous histiocytomas. The K-ras gene activation predominated in these tumors by a mutation at codon 13. It is noteworthy that H-ras mutations were detected only in association with the lesions containing K-ras mutated genes, the significance of which remains to be determined.

Cytologic Diagnosis of Malignant Fibrous Histiocytoma in Pleural Fluid: A Case Report.: Hwa Eun Oh, Yoo Hoon Kim, Seong Jin Cho, Young Sik Kim, In Sun Kim; Korean J Cytopathol. 1995;6(1):80-83.

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Abstract PDF: Malignant fibrous histiocytoma is the most common soft tissue sarcoma of late adult life, but it is rare in the pleura. We recently experienced a case of cytology of malignant fibrous histiocytoma in pleural fluid. The smear revealed histiocytic malignant cells, spindle malignant cells and inflammatory cells. The histiocytic cells showed abundant, pale cytoplasm and ovoid, irregular, eccentrically placed nuclei. The spindle cells showed elongated nuclei. Intercellular collagen was also present.

Bronchial Brushing and Bronchial Washing Cytologic Features of Primary Malignant Fibrous Histiocytoma of the Lung: A Case Report .: Mi Ok Park, Wook Su Ahn; Korean J Cytopathol. 1999;10(2):151-155.

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Abstract PDF: A case of primary malignant fibrous histiocytoma(MFH) of the lung occurring in a 62-year-old man is presented. After preoperative bronchial brushing and washing cytologic diagnosis of poorly differentiated carcinoma, surgical resection and lymph nodes dissection were performed. Subsequent histologic examination revealed a primary MFH. The diagnosis was confirmed by electron microscopic and immunohistochemical examinations. The review of the bronchial brushing and washing cytologic features disclosed many bipolar and a few unipolar spindle tumor cells with a "comet" configuration, mainly single cells, but also forming loose clusters. The nuclei were elongated and hyperchromatic and contained one or more irregular nucleoli. Scattered bizarre, multinucleated tumor giant cells were also present.

Angiomatoid Fibrous Histiocytoma: A Case Report.: Kyungeun Kim, Jong Seok Lee, Kyung Ja Cho; Korean J Pathol. 2006;40(5):377-380.

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Abstract PDF: We report on a case of angiomatoid fibrous histiocytoma located deep in subcutaneous tissue of the left shoulder in an 11-year-old boy. An ovoid firm mass was slowly increasing in size for 5 months without any pain or tenderness. The tumor was grossly multicystic, with dense fibrous capsule and it measured 7.5 x 7.5 x 4.0 cm. The locules contained hemorrhagic fluid, and the inner surface was purplish brown and trabecular. The septal solid areas were cellular, and they consisted of histiocytoid spindle cells that were arranged in a storiform or fascicular pattern. The tumor cells showed immuno-positivity for CD99, CD68 and desmin. These findings were compatible with angiomatoid fibrous histiocytoma of an uncommon location.

Solitary Cutaneous Reticulohistiocytoma On the Upper Lip: A Case Report.: Jae Wang Kim, Hyun Wook Kang; Korean J Pathol. 2006;40(5):373-376.

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Abstract PDF: Reticulohistiocytosis represents a rare spectrum of non-Langerhans cell histiocytosis: the solitary cutaneous form (reticulohistiocytoma), the diffuse or multiple cutaneous form without systemic involvement, and multicentric reticulohistiocytosis with systemic involvement. To the best of our knowledge, there have been relatively few reports in the literature of solitary cutaneous reticulohistiocytoma found on the lip. We report here on a case of solitary cutaneous reticulohistiocytoma in a 58-year-old male, who presented with an asymptomatic dome-shaped nodule adjacent to the upper lip. The histopathologic examination revealed a dense dermal infiltrate, that was composed predominantly of large oncocytic histiocytes and multinucleated giant cells with abundant granular eosinophilic cytoplasms, which had a "ground-glass" appearance.

Benign Histiocytoma of the Lung: A Case Report.: Myoung Ja Chung, Min Ho Kim, Hyun Jin Son; Korean J Pathol. 2005;39(5):351-355.

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Abstract PDF: Histiocytomas have rarely been reported in the lungs. We report an unusual benign pulmonary histiocytoma in a 45-year-old man and discuss the differential diagnosis. Chest CT showed a well-defined solitary pulmonary nodule of approximately 3 cm in size in the posterobasal segment of the right lower lobe. Posterolateral thoracotomy and wedge resection was performed. Gross examination revealed a mass, measuring 2.2 x 2.1 cm that had a circumscribed margin within the lung parenchyma. Microscopically, the tumor was entirely composed of large polygonal to round cells with a few chronic inflammatory cells. These tumor cells contained abundant cytoplasm which was either granular, eosinophilic or foamy. Immunohistochemically, these cells were diffusely positive for CD68 and focally positive for 1-antitrypsin, but negative for cytokeratin, vimentin, and smooth muscle actin.

DNA ploidy and Cellular Proliferation Activity in Experimentally Induced Malignant Fibrous Histiocytoma.: Ji Shin Lee, Jong Tae Park, Sang Woo Juhng, Hong Ran Choi, Kyu Hyuk Cho; Korean J Pathol. 1993;27(3):205-216.

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Abstract PDF: To fine out the changes of DNA ploidy and cellular proliferation activity during carcinogenesis and evaluate correlation between flow cytometrically determined S-phase fraction and proportion of proliferation cell nuclear antigen(PCNA, PC10) immunoreactive cells, the authors studied on malignant fibrous histocytoma induced by intra-articular injection of 9, 10-dimethy1-1, 2-benzanthracene(DMBA) in the rats. Forty Wistar rats were used. The results obtained were as follows. 1) Firstly, tumors were palpated 5 weeks after the last injection of DMBA and formed in 27 rats at sacrificed. Histologically, these lesions showed storiform, indicative of malignant fibrous histiocytoma. 2) Three cases of DNA aneuploidy were observed at 4 and 5 months after the last injection of DBMA and one of them, which was DNA diploidy at main mass, was found at daughter mass. 3) Flow cytometrically determined S-phase fraction and proportion of PCNA(PC10) immunoreactive cells in malignant fibrous histiocytoma induced by DMBA were much higher than in control groups and slightly increased according to sequential changes after formation of mass. The comparison of flow cytometrically determined S-phase fraction and proportion of PCNA(PC10) immunoreactive cells showed significant correlation(r=0.6092, p<0.001). Above results strongly suggest that ploidy pattern may evolve into aneuploid type during the development of tumor and proliferation activity increases during the carcinogenesis.

Benign Fibrous Histiocytoma of Spinal Cord.: Hae Joo Nam, Won Hee Choi, Tae Sook Lee; Korean J Pathol. 1988;22(4):510-514.

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Abstract PDF: Fibrous histiocytoma composed of fibroblasts and histiocytes is quite variable in histologic pattern. The biologic behavior is unpredictable by histologic ground. This tumor is well-known in subcutaneous tissue and deep soft tissue, but quite rare in central nervous system. We experienced a case of the fibrous histiocytoma involving the dura mater of spinal cord in a 26 year old female patient. In gross findings, the mass was a well demarcated, ovoid mass attached to the dura matter, and measured 2.5x1.5 cm in diameter. The cut surface was rubbery, solid, gray-white or yellow. Microscopically, the lesion consisted of polyhedral cells with round or oval nuclei and faintly eosinophilic or vaculoated cytoplasm, and multinucleated giant cells. Some giant cells were Touton-type. Composing cells were bland-looking. Mitotic figures were average 3 per 10 high power fields.

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