Gastric and Peritoneal Involvement of Human Herpes Virus 8 Related Kaposi Sarcoma in a Patient with Acquired Immunodeficiency Syndrome

Kaposi's sarcoma (KS) is one of the most frequent neoplastic diseases in patients infected with human immunodeficiency virus (HIV). The authors report the case of a 40-year-old male with ascites, peripheral edema and peritoneal carcinomatosis secondary to a gastric KS related to human herpes virus type 8 (HHV-8). The patient had severe immunodeficiency, with a TCD4+ count of 86 cells/µl and newly diagnosed acquired immunodeficiency syndrome. His clinical condition rapidly deteriorated, with multiorgan failure, and he died without the possibility of initiating antiretroviral therapy or chemotherapy. To the authors’ knowledge, carcinomatosis is a rare feature in KS.

Masson’s tumor: a soft tissue tumor simulating a tendon cyst. Case report

Introduction. Intravascular papillary endothelial hyperplasia (Masson's hemangioma or Masson’s tumor) is a benign vascular disease with an exuberant endothelial proliferation in normal blood vessels. Although relatively uncommon, its correct diagnosis is important because it can clinically be like both benign lesions and malignant neoplasms. We present a case of intravascular proliferative endothelial hyperplasia simulating a tendon cyst both clinically and on ultrasound. Case report. A 74-year old Caucasian female presented with a 4-month history of soreness and swelling in the fourth finger of the right hand. Ultrasound showed an oval mass with fluid content, referred to a tendon cyst. A wide surgical excision was subsequently performed. The final histological diagnosis was Masson’s tumor. Discussion. The pathogenesis of intravascular papillary endothelial hyperplasia is still unclear but the exuberant endothelial cell proliferation might be stimulated by an autocrine loop of endothelial basic fibroblast growth factor (bFGF) secretion. There are three types of papillary endothelial hyperplasia: primary, or intravascular; secondary, or mixed; and extravascular. The main differential diagnosis is against pyogenic granuloma, Kaposi sarcoma, hemangioma, and angiosarcoma. Conclusions. Masson's tumor can be like both benign lesions and malignant neoplasms clinically and on ultrasound. For this reason, the right diagnosis can be made only by histology, which reveals a papillary growth composed of hyperplastic endothelial cells supported by delicate fibrous stalks entirely confined within the vascular lumen.

Lymphadenopathy after Initiating HAART in an HIV-positive Patient with Kaposi's Sarcoma: a Case of Multicentric Castleman's Disease

We present the case of a 33-year-old lady who was diagnosed with disseminated Kaposi’s sarcoma and HIV infection. The patient improved on highly active antiretroviral therapy (HAART), however, nine days into treatment, she became febrile and dyspnoeic and developed tender cervical and axillary lymphadenopathy. Despite treatment for suspected sepsis and immune reconstitution, she died in intensive care. Lymph node biopsies revealed coexistent Castleman’s disease and Kaposi’s sarcoma. Initiation of HAART can be rarely associated with unmasking and rapid progression of Castleman’s disease, a phenomenon called immune reconstitution. Urgent investigation and treatment with agents such as steroids and cytotoxic drugs can be life-saving.

Carcinoma of unknown primary (CUP); some considerations about pathogenesis and diagnostic strategy, particularly focusing on CUPS pertaining to the Urology

he term "carcinoma of unknown primary" (CUP) defines a malignant condition in which a metastatic cancer is documented in absence of a detectable primary site. It occurs in about 2÷6 % of cancer patients, according to various literature reports. The primary tumor site results indefinable because of several either single or associated factors, even remaining occult at autopsy in 15÷25% of CUP patients. The metastatic spread pattern of CUP is quite unlike that expected for analogous known primary malignancy. For instance, the unknown prostate cancer often metastasizes to the lungs and liver while the its known analogous usually spreads to the bone. Whether certain genetic abnormalities might play a role in determining a CUP condition, it remains undefined. Most CUP are adenocarcinoma, squamous cell carcinoma, either undifferentiated or differentiated carcinoma, whereas less frequently may be sarcoma, melanoma or neuroendocrine tumor. As CUP diagnostic management is concerned, two opposite approach modalities may be adopted, one, named "shotgun modality", consisting in a multiplicity of examinations aimed at achieving the identification of the primary tumor and the other, a nihilistic modality, by adopting tout court a palliative therapy of the metastatic disease. A reasonable intermediate diagnostic strategy consists in undertaking some procedures with a specific target and low cost/benefit ratio. Selected imaging studies, serum tumor markers, immunohistochemical analyses and genetic- molecular examinations on biopsy material allow sometimes to reach the detection of primary malignancies that might be responsive to a potential treatments. Nevertheless, in spite of recent sophisticated -laboratory and imaging progress, CUP remains a strong challenge in clinical oncology.

Hypoglyceamia in a Patient with a Solitary Fibrous Tumour

Objective: To illustrate an unusual mechanism causing hypoglycaemia. Material and methods: A 76-year-old man presented with episodes of agitation and confusion and was resuscitated with oral glucose gel when found to be hypoglycaemic. Results: A CT scan for an abdominal mass confirmed a solitary fibrous tumour (SFT). The sarcoma multidisciplinary team suggested conservative management. The patient's episodic hypoglycaemia was managed with diet modification including corn-based starch, scheduled snacks and dexamethasone. Glucose levels were within normal range at discharge from hospital. The patient was referred to the palliative care team for follow-up. Conclusion: SFTs causing non-islet cell tumour hypoglycaemia are difficult to treat. KEYWORDS