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Biomedical subjects

G Char

Publications and source records attributed to G Char.

At least 19 recordsLinked to original sources

Granulosa cell tumour of the ovary with bilateral mature cystic teratomas. A case report.

Granulosa cell tumour with synchronous mature cystic teratoma is extremely rare and only eight cases are documented in the literature. Granulosa cell tumours are low-grade malignancies and need a close follow-up for recurrences which may be late. We report a case of granulosa cell tumour and mature cystic teratoma occurring synchronously in the same ovary in a post-menopausal woman.

Diagnosis, Differential↗

Malignant meningioma with extension into the neck.

One per cent of all brain tumours and twenty per cent of meningiomas eventually develop an extracranial extension. The least common site is the neck. We report a case of malignant meningioma with extension into the neck of a 39-year-old male.

Adult↗

Tuberculous encephalopathy. A rare complication of pulmonary tuberculosis.

A case of tuberculous encephalopathy, a rare form of neuro-tuberculosis, is reported in a 16-year-old girl who had pulmonary tuberculosis and extensive cerebral demyelination. The clinical, laboratory and pathological features of this entity are highlighted and the pathogenesis discussed.

Adolescent↗

Granulosa-theca cell tumour of the ovaries. A late metastasizing tumour.

Granulosa-theca cell tumours are ovarian neoplasms of low malignancy with hormone secreting potential, accounting for 2-3% of all ovarian cancers. They have an uncertain clinical course and a potential for late recurrence after surgical removal. Clinical features of a patient presenting with pulmonary metastases 21 years after removal of the primary tumour are described, along with a review of the management options.

Female↗

Angiomyofibroblastoma--a rare but distinct entity.

A case of angiomyofibroblastoma of the vulva in a 23-year-old woman is presented. Clinical, histological and immunohistochemical features as well as the differential diagnosis and prognosis of this rare but distinct entity are discussed. Only about 65 cases are documented in the literature and to our knowledge this is the first case to be reported from the Caribbean.

Adult↗

Orbital psuedotumour with intracranial extension. A case report.

Inflammatory pseudotumour of the orbit is an unusual condition of unknown aetiology which rarely extends beyond the orbit. To our knowledge 19 cases with intracranial extension have been reported, none of which involved the pituitary fossa or sphenoid sinus. Most required cytotoxic agents, surgery or radiotherapy in addition to corticosteroids. We present a case of orbital pseudotumour with extension into the pituitary fossa, sphenoid sinus and cavernous sinuses with vascular compression. Marked clinical improvement occurred on steroid therapy alone.

Adult↗

Metastatic carcinoma of the penis.

Metastatic carcinoma of the penis is uncommon. The primary tumour is most commonly reported to be in the genitourinary or gastrointestinal tract. A case of metastatic carcinoma of the penis, secondary to a primary carcinoma of the prostate gland, is described.

Adenocarcinoma↗

Identification of human T cell leukemia/lymphoma virus type I antibodies, DNA, and protein in patients with polymyositis.

OBJECTIVE: To investigate a possible association between human T cell leukemia/lymphoma virus type I (HTLV-I) and polymyositis (PM). METHODS: Sera and muscle biopsy samples from 9 Jamaican PM patients were compared with specimens from American HTLV-I-positive PM patients and normal controls. Sera were evaluated for HTLV antibodies by enzyme-linked immunosorbent assay and Western blot. The biopsy samples were analyzed for HTLV-I/II DNA by polymerase chain reaction and were also immunohistochemically stained for HTLV gp46 envelope protein. RESULTS: Seven of the 8 Jamaican PM patients from whom sera were available were HTLV-I seropositive. The muscle biopsies of all 9 Jamaican patients demonstrated severe lymphocytic infiltration, cellular degeneration, myofiber atrophy, and fibrosis. Each muscle biopsy specimen contained HTLV-I DNA. Two of 6 samples demonstrated intense staining for HTLV-I gp46 in many of the invading mononuclear cells and weak staining for HTLV-I gp46 in many of the invading mononuclear cells and weak staining in the adjacent myocytes. Two other specimens were weakly positive for gp46 in rare mononuclear cells. All control specimens were negative for the presence of HTLV-I DNA and protein. CONCLUSION: HTLV-I is associated with an inflammatory muscle disease characterized by direct invasion of the affected muscle by HTLV-I-infected mononuclear cells.

Adult↗

Malignant triton tumour of the spine: a case report.

A malignant triton tumour is a malignant schwannoma with rhabdomyoblastic differentiation, and is a very rare occurrence. We describe the case of a 33-year-old man with neurofibromatosis type 1 who presented with paraplegia. Pathological examination of an intradural, extramedullary tumour excised at lumbar laminectomy demonstrated a malignant schwannoma with rhabdomyoblastic differentiation. We believe this is the first documented case of a malignant triton tumour of the spine.

Adult↗

Prognosis of neuroblastic tumours in children.

A retrospective analysis of 26 children with neuroblastic tumours treated at the University Hospital of the West Indies (UHWI) between 1970 and 1991 was undertaken to evaluate factors affecting prognosis. The peak incidence was between 48 months and 60 months of age, and 75% of the deaths occurred in children older than 3 years. The abdomen was the most common site of the tumours 79% of which were from the adrenal gland and carried a dismal outcome. Other sites were thoracic, pelvic and cervical. Extra-adrenal tumours have a good outcome even when the histology is unfavourable; 92% of the tumours were in Stages III or IV at the time of initial presentation. Stage IV disease accounted for all but one of the deaths. Of the 8 children with favourable histology (ganglioneuroma or well-differentiated ganglioneuroblastoma), only one (12.5%) died, wheras of the remaining 18 cases with unfavourable histology (neuroblastoma and undifferentiated ganglioneuroblastoma), eleven (61.1%) died. When managed by surgery alone or with adjuvant chemo- and/or radio-therapy, only 36.4% succumbed while all 4 children with chemotherapy only died. Ten children are alive without disease for more than three years post-therapy. A scoring system was designed which takes into account the factors influencing the outcome in neuroblastic tumours, namely, age, location, stage and histological types of the tumours and therapy. All the children with a score of 21 or less survived, whereas all those with scores of 22 or above succumbed. This underlines the multifactorial influences on the final outcome of neuroblastic tumours.

Abdominal Neoplasms↗

Portal vein thrombosis in a child with homozygous sickle-cell disease.

A 13-year-old boy with homozygous sickle-cell (SS) disease died suddenly at home following a short history of abdominal pain. Autopsy revealed venous thrombosis of the hepatic, portal, superior mesenteric and splenic veins. Venous thrombosis is rare in SS disease and thrombosis of mesenteric vessels is most frequently seen in chronic myeloproliferative disorders. Its occurrence in SS disease raises the possibility of a common pathogenesis and adds another pathology to the causes of the abdominal painful crisis.

Abdominal Pain↗

Intravenous leiomyomatosis with massive ascites.

A case of intravenous leiomyomatosis with massive ascites is reported. This is the first such recorded case. The patient was treated with a subtotal abdominal hysterectomy and bilateral salpingo-oophorectomy. Pathological examination established a vessel wall origin. There is no evidence of recurrence up to 20 months after initial treatment.

Ascites↗

Stroke in a cohort of patients with homozygous sickle cell disease.

Strokes occurred in 17 of 310 children with homozygous sickle cell disease who were followed from birth, representing an incidence of 7.8% by the age of 14 years. Two children had subarachnoid hemorrhage, one having resolution of symptoms after aneurysm surgery and another dying of a presumed second hemorrhage 14 days later. The remaining 15 strokes were presumed to be cerebral infarction, although autopsy, angiographic, or computed tomographic evidence was available in only 8 children. There were 6 deaths, 2 in the acute event and 4 after recurrence, which occurred in 6 (46%) of 13 patients who survived the initial episode. There were 10 recurrent episodes at a median interval of 9 months after the initial event. Steady-state hematologic data revealed significantly higher leukocyte counts than in control subjects without strokes at age 1 year and in the last study preceding the stroke. The initial stroke coincided with an acutely lowered hemoglobin value in 5 patients (3 aplastic crises, 1 acute splenic sequestration, 1 probable pulmonary sequestration) and with painful crises in another 7 patients. We conclude that a high leukocyte count and an acute decrease of hemoglobin are risk factors for stroke in patients with homozygous sickle cell disease.

Adolescent↗

Thyrotoxic periodic paralysis in a Jamaican male patient.

A case of thyrotoxic periodic paralysis occurring in a Black Jamaican male patient is described. Diagnosis is based on history and confirmed by evaluation of serum electrolyte during attacks and thyroid function studies. The pathophysiology, associations, therapy and prognosis are discussed. It is important that clinicians recognise the condition as all forms of periodic paralysis are amenable to treatment, and progressive weakness can be prevented or even reversed.

Adult↗

Syndrome of inappropriate antidiuretic hormone secretion in a patient with intrasellar neurofibroma of the sixth nerve.

The syndrome of inappropriate antidiuretic hormone (SIADH) secretion has been described in a wide range of neurological and other disorders. We wish to add an extremely rare case of a solitary, large, invasive neurofibroma of the sixth cranial nerve extensively destroying the sella turcica in the skull base and causing inappropriate secretion of antidiuretic hormone in a 44-year-old black man in the absence of neurofibromatosis.

Abducens Nerve↗