Humans ; Histiocytosis, Sinus/diagnosis* ; Diagnosis, Differential ; Lung

Humans ; Histiocytosis, Sinus/diagnosis* ; Fractures, Compression/complications* ; Diagnosis, Differential

Objective To investigate the clinical and magnetic resonance imaging(MRI) manifestations of Rosai-Dorfman disease(RDD) in central nervous system. Method The clinical and MRI data of 5 cases of RDD in central nervous system confirmed by pathology in the PLA General Hospital were analyzed retrospectively. Results The 5 cases included 4 males and 1 female,aged(39.8±21.7) years on average.Among them,4 cases were located in the intracranial area and 1 case in the thoracic spinal canal.The lesion showed isointense signal on T₁ weighted image and iso,slight-hypo,and slight-hyperintense signals on T₂ weighted image,and it presented intensively homogeneous enhancement in contrast-enhanced MRI.Two cases showed compressed brain area with edema around the left parietal and left frontotemporal dura,thickening and enhancement in the adjacent dura,and dural tail sign.Three cases presented bone destruction in adjacent diploe and thoracic vertebrae.One case showcased slight-hypo perfusion of the left parietal dura in arterial spin labeling. Conclusions RDD lesion usually appears as iso,slight hypo and slight hyper-intense signals on T₂ weighted image and presents intensively homogeneous enhancement in contrast-enhanced MRI.The disease may involve the adjacent bone and the lesion shows slight hypo-perfusion on perfusion images.The MRI manifestations of RDD are characteristic,which are helpful for preoperative diagnosis and evaluation of RDD.
Central Nervous System/pathology* ; Female ; Head ; Histiocytosis, Sinus/pathology* ; Humans ; Magnetic Resonance Imaging/methods* ; Male ; Retrospective Studies

Humans ; Histiocytosis, Sinus/surgery* ; Nasal Cavity ; Neck ; Lymph Nodes ; Lymphatic Vessels

Introduction: Non-Langerhans cell histiocytoses (non-LCH) are a group of rare diseases with varied clinical manifestations and overlapping features seen among the subtypes. Here, we present a case of Rosai-Dorfman disease with features of necrobiotic xanthogranuloma. Case: A 45-year-old female presented with a 10-year history of an enlarging neck mass with normal overlying skin accompanied by dysphagia and multiple asymptomatic pink to yellowish-brown papules, nodules, and plaques on the face, trunk and extremities. Biopsies of a skin nodule and plaque revealed granulomatous dermal infiltrates (lymphocytes, foamy histiocytes, and Touton giant cells), emperipolesis and areas of necrosis. CD1A and Fite-Faraco staining showed negative results while CD68 and S100 positively stained the tissues of interest. Histopathology of the neck mass paralleled these findings in addition to being negative for lymphoid markers. Patient had monoclonal gammopathy and thyromegaly with enlarged cervical lymph nodes on further tests and imaging. Intralesional and systemic steroids were given which led to flattening of skin lesions and improvement in dysphagia, respectively. Conclusion Diagnosis and classification of a particular type of non-LCH may be difficult due to similarities across its subtypes. Hence, it is our belief that these diseases may occur on a spectrum. Treatment involves a multidisciplinary approach for the best possible care.
Histiocytosis ; Histiocytosis, Sinus ; Necrobiotic Xanthogranuloma

Diagnosis, Differential ; Histiocytosis, Sinus/diagnostic imaging* ; Humans ; Skin Diseases/diagnostic imaging*

OBJECTIVES: Metastasis in oral squamous cell carcinoma (OSCC) can occur in a variety of ways, and draining lymphatics and lymph nodes serve as a common route. Prior to metastasis, lymph nodes elicit an immune response to either wall off or create a favorable environment for homing of tumor cells. This immune response to tumor stimuli is visualized by recognizing various immunoreactive patterns exhibited by the lymph node. The present study aims to evaluate the role of immuno-morphologic patterns of the lymph node in neck dissection for cases of OSCC. MATERIALS AND METHODS: Our retrospective study included 50 neck dissection cases of OSCC and a total of 1,078 lymph nodes. The grades of primary tumors with eight different immunoreactive patterns were compared. Vascularity and metastasis in lymph nodes were also evaluated. RESULTS: The lymphocyte predominant pattern was the most common immunoreactive pattern found in 396 of 1,078 lymph nodes. Patterns of lymphocyte predominant (P=0.0005), sinus histiocytosis (P=0.0500), paracortical hyperplasia (P=0.0001), cortical hyperplasia (P=0.0001), and increased vascularity (P=0.0190) were significantly associated with tumor grade. CONCLUSION: The present study adds to the understanding of lymph node immunoreactivity patterns and their correlation with tumor grade. We recommend further study of lymph node patterns for all sentinel lymph node biopsies and routine neck dissections for OSCCs.
Biopsy ; Carcinoma, Squamous Cell ; Epithelial Cells ; Germinal Center ; Histiocytosis, Sinus ; Hyperplasia ; Lymph Nodes ; Lymphatic Metastasis ; Lymphocytes ; Neck Dissection ; Neck ; Neoplasm Metastasis ; Retrospective Studies

Intracranial Rosai-Dorfman disease (RDD) is a rare clinical histiocytosis proliferative disease. A 12-year-old boy with dizziness and headache for 1 month was admitted into Pediatric Neurosurgery of Xiangya Hospital, Central South University. The patient underwent total tumor resection and postoperative application of hormones and chemotherapy. During follow-up of 8 months, patient's condition was stable and no tumor recurrence was observed. For patient with a trend of tumor progression, stereotactic biopsy can help to confirm the diagnosis and determine the surgical strategy such as disposal of bone flaps. The treatment is mainly based on surgical intervention, supplemented by radiotherapy, chemotherapy and hormone therapy. Without affecting the nerve function, the surgeon should try to completely resect the tumor.
Biopsy ; Child ; Histiocytosis, Sinus ; Humans ; Male ; Neurosurgical Procedures ; Postoperative Period

Rosai-Dorfman disease, also known as the sinus histiocytosis with massive lymphadenopathy, is a rare and benign histioproliferative disease in which lymphadenopathy results from infiltration and dilatation of lymph node sinuses by large histiocytes. We experienced a case of a 59-year-old man, presenting bilateral cervical masses with pain since one month ago. Radiologically, there were multiple enlarged lymph nodes with homogenous contrast enhancement at both cervical areas. Excisional biopsy revealed that the tumor was consistent with the Rosai-Dorfman disease. The patient was treated successfully with corticosteroid. Herein, we report our experiences with literature reviews.
Biopsy ; Dilatation ; Histiocytes ; Histiocytosis ; Histiocytosis, Sinus ; Humans ; Lymph Nodes ; Lymphatic Diseases ; Middle Aged ; Neck

Sinus histiocytosis with massive lymphadenopathy, also known as Rosai-Dorfman disease (RDD), is a rare histiocytic disorder of unknown etiology. Most patients with RDD have spontaneous remission, but in some patients, the disease recurs after complete remission and may not respond to general treatment. Some patients with RDD involving the extranodal system can have serious symptoms such as vital organ dysfunction due to mass effects, neurological symptoms caused by intracranial involvement, and respiratory distress with airway involvement. We report the case of a 7-year-old girl with severe dyspnea due to refractory extranodal RDD that caused progressive upper airway obstruction. She was admitted because of nasal congestion and persistent cervical lymphadenopathy, and diagnosed as having RDD by cervical lymph node incisional biopsy. The initial prednisone treatment did not improve her symptoms. The following contrast-enhanced neck computed tomography revealed a newly developed airway mass protruding in the upper trachea. After 8 weeks of chemotherapy with vinblastine, methotrexate, and prednisone, complete remission was attained. Seven months after chemotherapy cessation, the disease recurred, and chemotherapy with vincristine, cytarabine, and prednisone was resumed. Despite the chemotherapy and emergency radiotherapy, no improvement was observed in the cervical lymph node enlargement and airway obstructive symptom due to the upper tracheal mass. 2-Chlorodeoxyadenosine (cladribine) therapy was initiated, and the patient got complete remission after 6 cycles of the cladribine treatment and maintained no evidence of disease for 2 years. We suggest that cladribine is an effective treatment option for recurrent/refractory RDD.
Airway Obstruction ; Biopsy ; Child ; Cladribine ; Cytarabine ; Drug Therapy ; Dyspnea ; Emergencies ; Estrogens, Conjugated (USP) ; Female ; Histiocytosis, Sinus ; Humans ; Lymph Nodes ; Lymphatic Diseases ; Methotrexate ; Neck ; Prednisone ; Radiotherapy ; Remission, Spontaneous ; Trachea ; Vinblastine ; Vincristine