Infantile hemangiomas are relatively common soft tissue tumors in infants and young children, with a prevalence of about 4.5% in full-term newborns. Subglottic Hemangioma （SGH） is a relatively rare type of hemangioma, and its special location often causes respiratory distress and potentially life-threatening conditions in infants. Therefore, it is necessary for clinicians to make an accurate diagnosis and formulate a detailed treatment plan based on the clinical manifestations, the auxiliary examinations, the medical history and the vital signs evaluation of patients.This review describes the pathophysiological mechanism of infantile hemangioma and provides a detailed discussion on commonly used treatment methods in detail.
Child, Preschool ; Humans ; Infant ; Infant, Newborn ; Hemangioma/diagnosis* ; Hemangioma, Capillary ; Laryngeal Neoplasms/surgery* ; Larynx/pathology* ; Soft Tissue Neoplasms

Chondroma ; diagnosis ; pathology ; surgery ; Female ; Humans ; Middle Aged ; Soft Tissue Neoplasms ; diagnosis ; pathology ; surgery

Adult ; CD56 Antigen ; metabolism ; Diagnosis, Differential ; Granzymes ; metabolism ; Humans ; Lymphoma, Extranodal NK-T-Cell ; metabolism ; pathology ; surgery ; Lymphoma, T-Cell, Peripheral ; metabolism ; pathology ; Male ; Pectoralis Muscles ; pathology ; surgery ; RNA, Viral ; metabolism ; Soft Tissue Neoplasms ; metabolism ; pathology ; surgery ; Thoracic Wall ; pathology ; surgery

Low-grade fibromyxoid sarcoma is a slowly growing soft tissue neoplasm that shows benign histologic features but may have clinical course of malignant disease. It has been reported to occur in the thigh, inguinal area, axilla, shoulder, neck, perineum or buttock. However, there have been few cases of abdominal organ involvement. A 21-year-old woman presented with a large palpable abdominal mass. A 7x4 cm sized round soft tissue tumor at right upper quadrant area was identified by abdominopelvic CT scan. Percutaneous ultrasound-guided biopsy revealed features of spindle cell tumor. On exploration, the tumor originated from transvers colon and was attached to gastrocolic ligament, transverse mesocolon and stomach. The tumor could be dissected with transverse colectomy and partial gastrectomy. The excised tumor, measuring 7x5x5 cm, was well demarcated and appeared as an ovoid mass with firm and myxoid cut surface. She was diagnosed with low-grade fibromyxoid sarcoma arising from transverse colon, and is currently being followed-up without recurrence or metastasis.
Colon, Transverse ; Female ; Humans ; S100 Proteins/metabolism ; Sarcoma/*diagnosis/pathology/surgery ; Soft Tissue Neoplasms/*diagnosis/pathology/surgery ; Stomach Neoplasms/pathology/secondary ; Tomography, X-Ray Computed ; Young Adult

OBJECTIVETo study the clinicopathologic features, immunophenotype and differential diagnosis of extraskeletal myxoid chondrosarcoma (EMC).

METHODSThe clinicopathologic features of 5 cases of EMC (during the period from 2008 to 2013) were retrospectively analyzed. Immunohistochemical study (EnVision method) was carried out using the archival material. The literature was reviewed.

RESULTSThere were altogether 3 female patients and 2 male patients. Their age ranged from 38 to 63 years (average = 51 years). The patients primarily presented with a tender soft tissue mass. All the tumors studied were solitary and the duration of disease onset varied from 3 months to 1 year. The sites of involvement included toe (number = 2), intracranial (number = 1), thigh (number = 1) and shoulder (number = 1). Gross examination showed white nodular masses with a gelatinous cut surface. The average tumor size measured 5.2 cm in greatest dimension. Histologically, a multinodular architecture with fibrous or loose fibrovascular septa separating lobules of tumor cells was identified. The lobules contained abundant myxoid stroma, with peripheral accentuation of tumor cellularity. Two cases were diagnosed as cellular variant of EMC, with invasive growth pattern and hemorrhage. The tumor cells in cellular EMC were arranged in solid nodules, with rare myxoid matrix in between. The nuclei were relatively uniform, round to oval and contained prominent nucleoli. The mitotic figure ranged from 5 to 10 per 10 high-power fields. Immunohistochemical study showed that all of the 5 cases were positive for vimentin, mitochondria and CD56. Two cases expressed synaptophysin and NSE. Focal positivity for these neuroendocrine markers was detected in the other 2 cases. Chromogranin and S-100 protein expression was demonstrated in 2 cases. The staining for epithelial membrane antigen was positive in case 2 and negative in the other 4 cases. CD117 showed diffuse positivity in case 1, the other 4 cases were not expressed.

CONCLUSIONSEMC is a rare soft tissue sarcoma characterized by distinctive histopathologic features and often shows neuroendocrine differentiation. Although EMC is a slow-growing tumor, it carries a high local recurrence rate and even metastases, warranting long-term follow up.

Adult ; CD56 Antigen ; metabolism ; Chondrosarcoma ; metabolism ; pathology ; surgery ; Chordoma ; metabolism ; pathology ; Chromogranins ; metabolism ; Diagnosis, Differential ; Female ; Humans ; Male ; Middle Aged ; Neoplasms, Connective and Soft Tissue ; metabolism ; pathology ; surgery ; Phosphopyruvate Hydratase ; metabolism ; Retrospective Studies ; Rhabdomyosarcoma ; metabolism ; pathology ; S100 Proteins ; metabolism ; Shoulder ; Synaptophysin ; metabolism ; Thigh ; Toes ; Vimentin ; metabolism

OBJECTIVETo study the clinicopathologic features, immunophenotype, molecular genetics and differential diagnosis of solid variant of angiomatoid fibrous histocytoma.

METHODSThe clinicopathologic features of 3 cases of solid variant of angiomatoid fibrous histocytoma were analyzed and the literature was reviewed.

RESULTSThere were a total of 2 males and 1 female. The age of patients ranged from 9 to 12 years. The patients presented with a painless mass located in left forearm, left knee or back. The lesions were treated by complete surgical resection. On gross examination, the tumors varied from 1.6 cm to 4.5 cm in greatest dimension. They were well-circumscribed and had pale yellow to grayish-red solid cut surface. Histologically, the tumor was composed of histocytoid cells arranged in sheet-like pattern. A fibrous pseudocapsule surrounded by lymphocytes and plasma cells was identified. Immunohistochemical study showed that the tumor cells in all cases were positive for vimentin and CD68. They were negative for S100 protein, cytokeratin, CD34, CD31, smooth muscle actin, CD35, CD21 and CD30. Two cases also expressed CD99 and one of them was positive for desmin and epithelial membrane antigen. Fluorescence in-situ hybridization was positive for EWSR1 gene.

CONCLUSIONSSolid type represents a variant of angiomatoid fibrous histocytoma and is considered as tumor of borderline malignant potential. Definitive diagnosis requires thorough histologic examination and clinical correlation. Immunohistochemistry and EWSR1 gene study are helpful in further delineation and differential diagnosis. Complete resection or wide local excision with post-operative follow up is the main modality of treatment.

Antigens, CD ; metabolism ; Antigens, Differentiation, Myelomonocytic ; metabolism ; Back ; Calmodulin-Binding Proteins ; genetics ; Child ; Dendritic Cell Sarcoma, Follicular ; metabolism ; pathology ; Diagnosis, Differential ; Female ; Forearm ; Histiocytoma, Malignant Fibrous ; genetics ; metabolism ; pathology ; surgery ; Humans ; Knee ; Male ; Neoplasms, Muscle Tissue ; pathology ; Neurilemmoma ; metabolism ; pathology ; RNA-Binding Protein EWS ; RNA-Binding Proteins ; genetics ; Soft Tissue Neoplasms ; genetics ; metabolism ; pathology ; surgery ; Vimentin ; metabolism

Calcium-Binding Proteins ; metabolism ; Diagnosis, Differential ; Female ; Fibroma ; metabolism ; pathology ; surgery ; Humans ; Inclusion Bodies ; pathology ; Infant ; Microfilament Proteins ; metabolism ; Skin Neoplasms ; metabolism ; pathology ; surgery ; Soft Tissue Neoplasms ; pathology ; Tendons ; pathology ; Toes ; Vimentin ; metabolism

Nodular fasciitis is a benign, reactive myofibroblastic tumor that is often mistaken for a sarcoma because of its histological appearance and rapid growth. Involvement of a finger is extremely rare. We report a case of nodular fasciitis of the thumb, accompanied by bone erosion. Magnetic resonance findings suggested the possibility of a malignancy, which could have led to misdiagnosis as a malignant soft tissue sarcoma. Instead, the lesion was treated by excisional biopsy, which confirmed nodular fasciitis. There has been no evidence of local recurrence at recent follow-up, 1 year after surgery. This case illustrates that, to avoid unnecessarily aggressive surgery, nodular fasciitis must be included in the differential diagnosis for any finger lesion that resembles a sarcoma, even if bone erosion is present.
Adult ; Biopsy ; Diagnosis, Differential ; Fasciitis/*diagnosis/surgery ; Female ; Finger Phalanges/pathology/*radiography ; Humans ; Magnetic Resonance Imaging ; Sarcoma/*diagnosis ; Soft Tissue Neoplasms/*diagnosis ; Thumb/*pathology/surgery

Nodular fasciitis is a benign, reactive myofibroblastic tumor that is often mistaken for a sarcoma because of its histological appearance and rapid growth. Involvement of a finger is extremely rare. We report a case of nodular fasciitis of the thumb, accompanied by bone erosion. Magnetic resonance findings suggested the possibility of a malignancy, which could have led to misdiagnosis as a malignant soft tissue sarcoma. Instead, the lesion was treated by excisional biopsy, which confirmed nodular fasciitis. There has been no evidence of local recurrence at recent follow-up, 1 year after surgery. This case illustrates that, to avoid unnecessarily aggressive surgery, nodular fasciitis must be included in the differential diagnosis for any finger lesion that resembles a sarcoma, even if bone erosion is present.
Adult ; Biopsy ; Diagnosis, Differential ; Fasciitis/*diagnosis/surgery ; Female ; Finger Phalanges/pathology/*radiography ; Humans ; Magnetic Resonance Imaging ; Sarcoma/*diagnosis ; Soft Tissue Neoplasms/*diagnosis ; Thumb/*pathology/surgery

12E7 Antigen ; Adolescent ; Adult ; Antigens, CD ; metabolism ; Biomarkers, Tumor ; metabolism ; Brain Neoplasms ; secondary ; Cell Adhesion Molecules ; metabolism ; Child ; Child, Preschool ; Diagnosis, Differential ; Extremities ; Female ; Follow-Up Studies ; Humans ; Immunohistochemistry ; In Situ Hybridization, Fluorescence ; Infant ; Ki-67 Antigen ; metabolism ; Male ; Neuroectodermal Tumors, Primitive ; metabolism ; pathology ; Oncogene Proteins, Fusion ; metabolism ; Repressor Proteins ; metabolism ; Sarcoma, Ewing ; metabolism ; pathology ; Sarcoma, Synovial ; diagnosis ; metabolism ; pathology ; surgery ; Soft Tissue Neoplasms ; diagnosis ; metabolism ; pathology ; surgery ; Vimentin ; metabolism ; Young Adult