Rosai-Dorfman Disease with Cervical Lymphadenopathy

Rosai-Dorfman Disease with Cervical Lymphadenopathy Rosai-Dorfman Disease with Cervical Lymphadenopathy and Orbital Involvement: A Case Report *Sameer Saleem 1, Sundas Younas 2, Kamran Qayyum 3 1 MBBS (2013), Khyber Medical College Peshawar, Pakistan 2 MBBS (2013), Khyber Medical College Peshawar, Pakistan 3 MBBS (2014), Khyber Medical College Peshawar, Pakistan ABSTRACT Rosai-Dorfman disease (RDD), also known as sinus histiocytosis with massive lymphadenopathy (SHML), is a rare histiocytic disorder which occurs due to the over-production of non Langerhans sinus histiocytes. It is a nonmalignant disorder that most frequently affects children and young adults and typically presents with fever, night sweats, nonpainful cervical lymphadenopathy, leukocytosis and an elevated ESR. Extranodal involvement may also occur which includes skin and soft tissues, nasal cavity, orbit, bones, central nervous system, salivary glands, kidneys, respiratory tract and liver. The digestive tract, heart and breast can also be affected but very rarely. The disease has an unknown etiology, although some viruses like Human Herpes virus 6 and Epstein Barr virus have been implicated as causative agents. RDD can often be misdiagnosed as lymphoma, leukemia or tuberculosis, so it is imperative to distinguish it from these conditions as well as other causes of histiocytosis becaus e of the different treatment modalities. Diagnosis of Rosai-Dorfman disease is based on biopsy of affected tissue. Biopsy showing the presence of emperipolesis, or the engulfment of lymphocytes and other immune cells by histiocytes that express S-100 antigen is diagnostic of Rosai-Dorfman disease. Once diagnosed, further workup including imaging studies are undertaken in order to determine the extent of the disease. In majority of cases, the disease resolves on its own however, treatments including corticosteroids, chemotherapy, surgical treatment or radiotherapy are carried out in severe or persistent disease or when organ function is at stake (e.g. breathing obstruction, kidney failure, visual problems). The case we report is that of a 16 year old girl who presented with a 6 month history of gradual onset drooping of left upper eyelid with mild proptosis of the left eye alongwith mild drooping of right upper eyelid, low grade fever, night sweats and cervical lymphadenopathy. Blood workup showed increased ESR, CT scan of orbits showed superior orbital masses and diagnostic biopsy revealed Rosai-Dorfman disease. Keywords: Rosai Dorfman disease, cervical lymphadenopathy, emperipolesis, histiocytes, proptosis CASE REPORT A 16 year old girl presented to the outpatient department of Khyber Teaching Hospital, Peshawar, Pakistan in February 2015 with a six month history of gradual onset, painless left upper eyelid drooping alongwith low-grade fever and night sweats plus a 20 day history of gradual onset right upper eyelid drooping. She also noticed a few lumps in her cervical region. She had no significant past medical history of any major illness and no family history of tuberculosis or blood disorders was found. Her vitals were as follows, BP 120/80 mm Hg, pulse 90/min, respiratory rate 15/min and temperature 100.2 ÃÅ'Ã…   F. On examination she had bilateral painless cervical lymphadenopathy and bilateral superior orbital masses on palpation. Her vision was 6/6 in both eyes. Ptosis was seen in both right (3mm) and left (5mm) eyes. Mild left eye proptosis was also seen. Extraocular movements were restricted in upper gaze of both eyes, more so of the left eye. There was no evidence of any visceromegaly and the rest of the general physical and systemic examinations were unremarkable. Lab investigations: Hb 11.1 g/dl, RBC 4.27 million/cmm, Hct 32.4 %, MCV 76 fl, MCH 25.9 pg, MCHC 34.2 g/dl, Platelet count 328000/cmm, TLC 11000/cmm, normocytic normochromic picture with DLC showing 80% neutrophils, 15% lymphocytes and 5% monocytes on peripheral smear, ESR 70 mm/1st hour, negative HbS and HCV screening, negative PPD and sputum AFB, normal Liver function tests and normal Renal function tests. Chest X-ray was normal, U/S and CT scan of the abdomen and pelvis were normal. CT scans of the orbits showed bilateral superior orbital masses and mild proptosis of the left eye. Incisional biopsy of the left Superior orbital mass was performed that revealed the diagnosis of Rosai-Dorfman disease. CT scan orbit (Coronal View): Bilateral Superior Orbital Masses CT scan Orbit (Axial View): Mild Proptosis of the Left Eye Treatment: The patient was counseled about the nature of the disease and administered Inj. Methylprednisolone 1gm x OD for 3 days followed by Tab Prednisolone 1mg/Kg body weight x OD and advised followup after 4 weeks. On followup visit, examination showed that her ptosis and cervical lymphadenopathy had improved. She was also assessed for side effects of steroid therapy. No side effects were noted. She was advised followup after 8 weeks. DISCUSSION Rosai-Dorfman disease (RDD), also known as sinus histiocytosis with massive lymphadenopathy (SHML), is a rare histiocytic disorder which occurs due to the over-production of non Langerhans sinus histiocytes. [1, 2] It was first described as a unique clinicopathologic entity by Rosai and Dorfman in 1969. [3] Although lymph nodes are more commonly involved, any organ may be affected. [1] Cardinal features include painless cervical lympahadenopathy, fever and elevated ESR. [4]Extranodal involvement has been reported in diverse anatomic sites, particularly the skin, orbit, and upper respiratory tract. [5, 6] Central nervous system involvement without nodal disease has also been reported. [7] Rosai-Dorfman disease though quite rare, is distributed worldwide with 80% cases occurring in children and young adults with a slight male predominance (58%) and has a general predilection for individuals with African descent. [8] The etiology of RDD is unknown, however certain viruses like Human Her pes virus 6 and Epstein-Bar virus via causing immune dysregulation have been implicated in the pathogenesis of this disease. [9, 10, 11] The diagnosis of Rosai-Dorfman disease is not easy since its presentation can mimic a number of other non-malignant as well as malignant conditions ranging from bacterial or viral infections to malignancies including leukemia and lymphoma. Biopsy of the lymph node or affected tissue is required for the diagnosis of this disease. Proliferating S100 and CD68 antigens positive histiocytes exhibiting emperipolesis i.e. phagocytosis of intact lymphocytes and other immune cells, is the classical histologic finding on biopsy in Rosai Dorfman disease. No specific treatment protocol is established for Rosai Dorfman disease because the disease is rare and its course is mostly self limiting. [14] However, patients with severe, persistent disease or in cases where organ function is compromised steroid therapy, chemotherapy, surgical resection or radiotherapy can be instituted with varying success rates. [12, 14, 15] CONCLUSION Rosai-Dorfman disease shares many of its presenting features with leukemia, lymphoma, tuberculous lymphadenitis and other causes of histiocytosis, so it should be considered in the differentials of patients, especially children and young adults who present with painless cervical lymphadenopathy. It is also important for physicians to recognize that the disease can have a myriad of clinical manifestations depending upon the tissue involved, as was the case in our patient we presented in this case report having cervical lymphadenopathy with orbital involvment in whom lymphoma, leukemic deposits, orbital pseudotumor, Langerhan’s cell histiocytosis and hemangioma were also amongst the list of differentials until biopsy confirmed the diagnosis of RDD. It is essential for pathologists as well to look for the histopathologic features of this disease in biopsy specimens, since if promptly diagnosed and managed, can reduce unnecessary diagnostic workups and mismanagement due to misdiag nosis of this disease. CONSENT Written informed consent was taken from the patient and her parents for the publication of this case report and any accompanying images. ABBREVIATIONS AFB Acid Fast Bacilli BP Blood Pressure CT Computed Tomography DLC Differential Leukocyte Count ESR Erythrocyte Sedimentation Rate Hb Hemoglobin HbS Hepatitis B surface antigen HCV Hepatitis C virus Hct Hematocrit MCH Mean Corpuscular Hemoglobin MCH CMean Corpuscular Hemoglobin concentration MCV Mean Corpuscular Hemoglobin PPD Purified Protein Derivative RBC Red Blood cells RDD Rosai-Dorfman Disease SHML Sinus Histiocytosis with Massive Lymhpadenopathy TLC Total Leukocyte Count References Riyaz N, Khader A, Sarita S. Rosai-Dorfman syndrome.Indian J Dermatol Venereol Leprol.2005;71:342–4. James, William D.; Berger, Timothy G.; et al. (2006).Andrews Diseases of the Skin: clinical Dermatology. Saunders Elsevier.ISBN0-7216-2921-0 Kong Y, Kong J, Shi D, Lu H, Zhu X, Wang J, Chen Z:Cutaneous Rosai–Dorfman Disease: a clinical and histopathologic study of 25 cases in China. Am J Surg Pathol2007,21:341-350. Foucar E, Rosai J, Dorfman R: Sinus histiocytosis with massive lymphadenopathy (Rosai-Dorfman disease): a review of the entity. Semin Diagn Pathol 1990; 7:19-73 Puppin D Jr, Chavaz P, Harms M: Histiocytic lymphophagocytic panniculitis (Rosai-Dorfman disease): a case report. Dermatology 1992; 184:317-320 Andriko JW, Morrison A, Colegial CH, et al: Rosai-Dorfman disease isolated to the central nervous system. A report of 11 cases. Mod Pathol 2001; 14:172-178 Woodcock RJ, Mandell JW, Lipper MH: Sinus histiocytosis (Rosai-Dorfman disease) of the suprasellar region: MR imaging findings a case report. Radiology 1999; 213:808-810 Sodhi KS, Suri S, Nijhawan R, Kang M, Gautam V:Rosai–Dorfman disease: unusual cause of diffuse and massive retroperitoneal lymphadenopathy. Br J Radiol2005,25:845-847. Ensari S, Selcuk A, Dere H, Perez N, Dizbay Sak S:Rosai–Dorfman disease presenting as laryngeal masses. Kulak Burun Bogaz Ihtis Derg2008,18:110-114. Pinto DCG, Vidigal TA, Castro B, Santos BH, DeSousa NJA:Rosai–Dorfman disease in the differential diagnosis of cervical lymphadenopathy. Bras J Otorrinolaringol2008,74:632-635. Levine PH, Jahan N, Murari P, Manak M, Jaffe ES:Detection of human herpesvirus 6 in tissues involved by sinus histiocytosis with massive lymphadenopathy (Rosai–Dorfman disease). J Infect Dis1992,166:291-295. Yoon A, Parisien M, Feldman F, Young-In Lee F:Extranodal Rosai–Dorfman disease of bone, subcutaneous tissue and paranasal sinus mucosa with a review of its pathogenesis. Skeletal Radiol2005,34:653-657. Montgomery EA, Meis JM:Rosai–Dorfman disease of soft tissue. Am J Surg Pathol1992,16:122-129. Pinto DCG, Vidigal TA, Castro B, Santos BH, DeSousa NJA:Rosai–Dorfman disease in the differential diagnosis of cervical lymphadenopathy. Bras J Otorrinolaringol2008,74:632-635. Moore J, Zhao X, Nelson E:Concomitant sinus histiocytosis with massive lymphadenopathy (Rosai–Dorfman disease) and diffuse large B-cell lymphoma: a case report. J Med Case Reports2008,2:70.

Bosu Balance Trainer Essay

BOSU has used a few types of competitive advantage`s principles in order to defeat copycat products. BOSU created a new product and locked in customers and buyers by establishing alliances with trainers. BOSU`s marketing strategy created market entry barriers. 2. Information systems played a key role in BOSU`s success. Fitness Quest maintains a database of trainer data. It uses that database for email and postal correspondence as well as for other marketing purposes. Fitness Quest was crucial in the process of BOSU developing a successful marketing strategy. By Fitness Quest database of trainer data, BOSU was able to establish alliances and lock in consumers and buyers. 3. There are many ideas that could be used by Fitness Quest in order to develop its information systems. The main idea would be to help to strengthen ties between customers and between costumers and trainers. Trainers could share ideas about fitness classes for example. There could be also an available chat for customers, so BOSU buyers could participate in chat groups about how they like and use their BOSU trainers. 4. Through trainers, BOSU was able to differentiate. BOSU`s focus was on fitness trainers within the industry. This worked because the trainers believed the BOSU was the best product for giving customer value, which built a relationship between each customer and the product. 5. 1.enhance products and services 2.differentiate products and services 3.lock in customers and trainers 4.raise barrier to market 5.entry and establish alliances 6. There are many differences between BOSU and Indo-Row since those are two completely different products with two different goals. BOSU product focused on balance and Indo-row focused on total work out (it competes with other equipment-based forms of group exercise as Spinning). Indo-row is also more expensive than BOSU and there is no direct competitor since the product is new in the market. The main threat Indo-row and BOSU may face is the possibility of competing with a copycat product in future. 7. It would be already expected from Fitness Quest to send the Indo-row information to trainers and clients by database provided through email and mail. It would be also interesting to provide seminars and training for trainers in order to instruct them how to use the product (so they would be able to teach people how to get the best out of Indo-row). Customers and trainers group chats would be also a good idea, so they would be able to interchange opinions about the product.

What Everybody Else Does When It Comes to Customresearchpapers Essay and What You Need to Be Doing Different

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Evaluation Of Air Pollution Of Bangkok, Thailand - 1508 Words

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Bangkok’s transport system and causing pollution problems are unique, such as Bangkok has 4,075 kilometers of roads with a total area of 58.45 km2, but even then, an increasing number of vehicles in Bangkok has not been matched by a proportional increase in road construction. Thus leading to traffic congestion, added more pollution caused by transport delay. The Pollution control Department and Thai Environment Institute (Boontheerawaraet al., 1994) reported that currently issue of air pollution became a major environmental problem of Thailand. Emissions of particulate from traffic, carbon monoxide, sulfur dioxide nitrogen oxides and ozone have been increasing gradually over the past few decades. 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