Lymphangiectatic Kaposi's sarcoma in a patient with AIDS

Kaposi''s sarcoma is a malignant disease that originates in the lymphatic endothelium. It has a broad spectrum of clinical manifestations. Its four distinct clinical forms are: classic, endemic, iatrogenic and epidemic Kaposi''s sarcoma. In non-HIV-associated Kaposi''s sarcoma, the disease is typically limited to the lower extremities, but in immunodeficient patients, it is a multifocal systemic disease. The clinical course of the disease differs among patients, ranging from a single or a few indolent lesions to an aggressive diffuse disease. Advanced Kaposi''s sarcoma lesions, typically those on the lower extremities, are often associated with lymphedema. In this paper, we report a case of a patient with a rare form of AIDS-associated Kaposi sarcoma called lymphangiectatic Kaposis''s sarcoma.     

Acute myelocytic leukaemia associated with Kaposi's sarcoma in a patient without serum antibodies to human immunodeficiency virus type 1

We report a 35-year-old man with acute myelocytic leukaemia and Kaposi's sarcoma, whose serum was non-reactive for antibodies to human immunodeficiency virus type-1 by enzyme-linked immunosorbent assay. Western blot and immunofluorescence. Complete remission of both the acute leukaemia and the Kaposi's sarcoma followed treatment with mitoxantrone and cytosine arabinoside. We speculate that the rapid regression of the lesions of Kaposi's sarcoma might be related to mitoxantrone and to the return to normal of his peripheral helper and suppressor T-cell counts.     

Kaposi肉瘤治疗的研究进展

Kaposi肉瘤的治疗应依据不同临床类型,制定个体化方案.常用治疗方法有电化学疗法、放疗、物理治疗(如硝酸银、液氮冷冻、弹力长筒袜)和皮损内注射等,适用于经典型Kaposi肉瘤及其他类型Kaposi肉瘤的皮肤损害.常用治疗药物有足叶乙甙、紫杉醇、阿霉素、雷帕霉素、吉西他滨等,适用于各型Kaposi肉瘤.Kaposi肉瘤的治疗尚缺乏标准化指南,以上治疗远期疗效欠佳.目前,新治疗靶标的研究主要集中在阻止成瘤过程、炎症调控、阻止病毒复制、细胞周期的调控等方面.     

Taponamiento cardíaco por sarcoma de Kaposi

—Kaposi's sarcoma is a systemic angiomatous tumor that generally affects individuals over 50 years of age; it is mainly observed in male patients. Few cases of visceral involvement have been described in its classic form. In this work, we describe a case of classic Kaposi's sarcoma with disseminated skin lesions, involvement of multiple internal organs and fatal evolution. The cause of death was a cardiac tamponade caused by the Kaposi's sarcoma lesions that developed in the epicardium and the pericardium.     

Kaposi's sarcoma associated with immunosuppression for bullous pemphigoid

Kaposi's sarcoma may occur in transplant recipients on immunosuppressive regimens, but is not well recognized in association with treatment for dermatological disease. We report two cases where multifocal Kaposi's sarcoma developed following iatrogenic immunosuppression with prednisolone and azathioprine for bullous pemphigoid. Both patients were HIV negative and, in one case, lesions regressed both clinically and histologically when immunosuppressive therapy was withdrawn.     

Immunohistochemical detection of the latent nuclear antigen-1 of the human herpesvirus type 8 to differentiate cutaneous epidemic Kaposi sarcoma and its histological simulators

Kaposi''s sarcoma is the most common neoplasia diagnosed in AIDS patients and the expression of the human herpesvirus-8 (HHV-8) latent nuclear antigen-1 has been useful for its histological diagnosis. The aim of this study is to confirm that immunohistochemistry is a valuable tool for differentiating KS from its simulators in skin biopsies of HIV patients. Immunohistochemical and histological analyses were performed in 49 Kaposi''s sarcoma skin biopsies and 60 of its histological simulators. Positivity was present in the 49 Kaposi''s sarcoma skin biopsies and no staining was observed in the 60 simulators analyzed, resulting in sensibility and specificity of 100%. HHV-8 immunohistochemical detection is an effective tool for diagnosing Kaposi''s sarcoma, especially in early lesions in which neoplastic features are not evident. It also contributes to its histological differential diagnosis.     

Kaposi's sarcoma and rheumatoid arthritis: a possible immunogenic and drug interaction

Background In the literature, Kaposi's sarcoma-rheumatoid arthritis association is reported and it has been suggested that genetic predisposition may play an important role. Numerous studies indicate that immunological deficiency may also have an important role in the pathogenesis of Kaposi's sarcoma, along with a series of others factors. Patients and methods We present two cases of Sardinian women with rheumathoid arthritis and Kaposi's sarcoma where the relationship between the drugs used for the treatment of the former (particularly gold salts) and Kaposi's sarcoma is highlighted. In addition, their genetic background is delineated. Conclusion Our findings suggest that genetic background associated with drugs plays a role in the pathogenesis of Kaposi's sarcoma in rheumatoid arthritis patients.     

The theràpeutic effect of intralesional interferon in classical Kaposi's sarcoma

Interferon alpha-2a, which has antineoplastic, antiviral, immunomodulatory, and antiangiogenic effects, was evaluated in a prospective study, treating 10 lesions of patients with classical Kaposi's sarcoma. Ten patients received injections of interferon alpha-2a intralesionally in a dose of 3 million units three times weekly for 4 weeks, and in a variable dose for 4 more weeks. Two of the patients had a complete response, and in one of these, distant lesions also responded. Seven had a partial response, and one did not respond. The treatment was generally well tolerated. The results of our study support the use of interferon in the therapy of classical Kaposi's sarcoma, although it would appear that to achieve maximum efficacy, a longer period of treatment is needed.     

Cutaneous cryptococcosis and Kaposi's sarcoma occurring in the same lesions in a patient with the acquired immunodeficiency syndrome

A 34-year-old woman presented with a history of fever, malaise and skin lesions. A diagnosis of Kaposi's sarcoma and acquired immunodeficiency syndrome (AIDS) was established, and in addition, the skin lesion which was biopsied also demonstrated cryptococcal infection. Disseminated cryptococcosis was later confirmed and the disease ran a florid course. The co-existence of different diseases within the same lesion is a feature of human immunodeficiency virus (HIV) infection, this being the third documented case of simultaneous Kaposi's sarcoma and cutaneous cryptococcosis occurring at the same site in a patient with AIDS. The nature of this co-existence is discussed with reference to the pathogenesis of Kaposi's sarcoma.     

The development of pseudo-Kaposi's sarcoma after placement of a vascular access graft

Pseudo-Kaposi's sarcoma developed on the skin overlying a vascular access graft in a haemodialysis patient. After spontaneous thrombosis within the graft, the cutaneous lesions promptly resolved. Light and electron microscopic study of the lesions failed to distinguish them from those of true Kaposi's sarcoma.     

Clinical exuberance of classic Kaposi's sarcoma and response to radiotherapy

Kaposi''s sarcoma (KS) is a multicentric vascular neoplasm, with cutaneous and extracutaneous involvement. Different clinical and epidemiological variants have been identified. The classic form is manifested mainly in elderly men with indolent and long-term evolution, with lesions localized primarily in the lower extremities. We present two cases of classic Kaposi''s sarcoma (CKS) in two female patients with extensive, exuberant skin involvement and rapid evolution, with good response to radiotherapy.     

Bleomycin-induced flagellate dermatitis in AIDS patients with Kaposi's sarcoma

Objective To describe and illustrate bleomycin-induced cutaneous toxicity, which may present atypically in AIDS patients with Kaposi's sarcoma. Design and subjects Case note review of all AIDS patients receiving systemic chemotherapy in the preceding year. Setting Combined oncology and HIV out-patient clinic at the Chelsea and Westminster Hospital in London. Outcome measured Cutaneous toxicity associated with intravenous bleomycin therapy. Results We report three cases of bleomycin-induced flagellate dermatitis with atypical presentation of pruritic skin lesions after relatively low doses of bleomycin. Conclusions Bleomycin usage is increasing as an effective agent in the treatment of AIDS-related Kaposi's sarcoma. Awareness that cytotoxic drugs may produce a range of unusual cutaneous adverse effects in this patient population is important for doctors of all specialities who treat HIV-infected patients. The pathomechanism of flagellate dermatitis is discussed.     

Familial Kaposi's sarcoma and Paget's disease of bone

Familial Kaposi's sarcoma and familial Paget's disease of bone have not previously been reported to occur in the one patient or the one family. We report on an 82-year-old female of Lebanese descent who was recently diagnosed with Kaposi's sarcoma and Paget's disease. Of the patient's eight siblings, seven had Paget's disease and two of these also had Kaposi's sarcoma. Histocompatibility leucocyte antigen (HLA) class I and II typing of the patient showed: A2, A3; B35, Bx; Bw6; Cw4; DRβ1*1101 (an HLA-DR5 subtype) DRβ3 and DQβ1*0301. Previous reports have described possible associations of familial Kaposi's sarcoma with HLA-DR5 and Paget's disease with DR2, DRβ1*1104, DPβ1*04and DQw1. Genetic factors and possible viral aetiologies fur each condition are reviewed.     

Kaposi's sarcoma and immunosuppressive therapy: an appraisal

Kaposi's sarcoma can probably be added to the list of tumours (lymphomas and squamous cell epitheliomas) that are especially prone to arise as a result of immunosuppressive therapy. Sixteen examples of this complication have been described in the literature and we report three further instances. These three patients had been on treatment with prolonged steroid therapy, but many of the previosly reported patients had been on aggressive immunosuppressive regimes to prevent rejection of kidney transplants. Kaposi's sarcoma associated with steroid and immunosuppressive therapy may show enhanced incidence in women (7 females as against 12 males) remembering that the spontaneous disease occurs ten times more frequently in men than women. We discuss the implications of these findings against the background of the high incidence of Kaposi's sarcoma in parts of Africa where immunological derangement consequent on malaria may be significant.     

Acquired progressive lymphangioma: Case report with partial response to imiquimod 5% cream

Acquired progressive lymphangioma (APL), or benign lymphangioendothelioma, is an unusual entity derived from vascular structures. Clinically and histopathologically it may resemble Kaposi's sarcoma and well‐differentiated angiosarcoma, causing a diagnostic problem. We report an individual with APL initially diagnosed with Kaposi's sarcoma who underwent unnecessary laboratory testing. Imiquimod 5% cream stopped the progression of the lesion. Awareness of this rare entity may prevent patients from undergoing excessive testing. Imiquimod may be used as a safe, effective treatment option.     

Kaposi's sarcoma with primary bone lesions in an HIV-seronegative man

Summary Classic Kaposi's sarcoma, with primary bone lesions, is described in an HIV-seronegative man. The bone involvement, painful lytic lesions in the right leg and both feet, was shown by magnetic resonance and histology not to be contiguous with the skin lesions. Chemotherapy with vinblastine and doxorubicin. significantly reduced the skin and bone lesions, and pain also improved.     

The development of Kaposi's sarcoma during immunosuppressive therapy for temporal arteritis

Background The appearance of Kaposi's sarcoma during iatrogenic immnunosuppression for renal transplantation is well known. A growing number of patients undergoing immnunosuppressive therapy for conditions other than organ transplanation have also developed this neoplasm, and temporal arteritis is emerging as one of the more common of those conditions. Case: We report a case of Kaposi's sarcoma complicating corticosteroid therapy for temporal arteritis, summarize the previously reported cases and consider the possible association between these two disorders. Conclusion: Although inconclusive from the available data, patients with temporal arteritis may be predisposed to iatrogenic Kaposi's sarcoma due to a shared antigen specific immune response.     

Bacillary angiomatosis: presentation of six patients, some with unusual features

Bacillary angiomatosis (BA) is an unusual systemic vascular proliferation seen predominantly in patients with the acquired immunodeficiency syndrome. These vascular lesions are probably due to infection with a Bartonella species, most often B. henselae and. in some patients, B. quintana. BA is treatable and often curable, but without therapy, may be life-threatening. Clinically, the lesions, when superficial, are said to often resemble pyogenic granulomas, appearing polypoid histologically with an epidermal collarette. We now report six patients, three of whom showed lesions of BA morphologically and histologically distinct from the other patients reported to date. Two patients' lesions appeared clinically as violaceous plaques and tumours resembling Kaposi's sarcoma; one of them had lesions histologically reminiscent of a papular angiokeratoma; and the other had lesions histologically suggestive of a combination of Kaposi's sarcoma and BA. Another patient presented with soft subcutaneous nodules which histologically showed extensive acute inflammation characteristic of an acute abscess, but which also displayed proliferating dilated small blood vessels with bulbous endothelial cells adjacent to numerous bacteria and also containing them. The Grocott-methenamine silver stain and the Warthin-Starry stain showed the organisms to better advantage in lesions of all six patients, although bacteria were also evident with the haematoxylin and eosin. periodic acid-Schiff and alcian blue stains.     

Disseminated Kaposi's Sarcoma with the Involvement of Penis in the Setting of HIV Infection

Kaposi''s sarcoma (KS) is a malignant proliferation of the endothelial cells. It typically presents with several vascular nodules on the skin and other organs. The penile localization of KS, particularly on the shaft area, is exceptional. We report an HIV-positive 34-year-old man who had multiple purplish-black plaques on his extremities and several small violaceous macules on the glans and shaft of the penis. Kaposi''s sarcoma was diagnosed by histopathology.     

Classic Kaposi's sarcoma treated with topical rapamycin

Kaposi's sarcoma (KS) is an angioproliferative disorder caused by human herpesvirus 8 (HHV‐8). Current research efforts have focused on the study of the relative role of KSHV‐encoded genes in Kaposi's sarcomagenesis in order to identify novel mechanism‐based therapies for patients suffering from this tumor. Although several viral genes have potential for KS pathogenesis, compelling data point to the KSHV‐encoded G protein‐coupled receptor (vGPCR) as a leading candidate viral gene for the initiation of KS. Interestingly, the oncogenic potential of vGPCR seems to correlate with its capacity to activate the mammalian target of rapamycin (mTOR) signaling pathway. Rapamycin, the prototypical inhibitor of the mTOR signaling pathway, has recently emerged as an effective treatment for KS when administered orally. In this case report, we present an immunocompetent patient with KS lesions treated with topical rapamycin achieving clinical and histologic healing after 16 weeks of treatment. The topical application of rapamycin could be a novel therapeutic option for the treatment of KS.