Cytological diagnosis of bancroftian filariasis in lesions clinically anticipated as neoplastic.

Filariasis is a common disabling parasitic disease in this region and cytological diagnosis is often not required. Cytology has important role in diagnosis of sub-clinical filariasis. Most cases of cytologically diagnosed filariasis are clinically unanticipated. Microfilaria, ova and fragments of adult worm of Wuchereria bancrofti, in exfoliative as well as aspiration cytology have been reported and are useful in cytological detection of bancroftian filariasis. Microfilaria is frequently detected in association with neoplasm, although the role in tumorogenesis is controversial. The objective of the study was to investigate importance of cytology in diagnosis of filariasis in lesions clinically anticipated to be of neoplastic and to review the cytomorphology of bancroftian filaria and its association with neoplasm. This is a retrospective study carried out in cytology department of Tribhuvan University Teaching Hospital. 14 cases of cytological specimen out of 4291 (0.3%) showed microfilaria; 12 cases were from FNAC from different sites and 2 cases were from pleural fluid. 2 cases showed ova in addition to microfilaria and one of them in addition showed fragment of adult worm. Microfilaria in 4 cases of FNAC and one case ofpleural fluid were associated with malignant cells.

Bone marrow examination in cases of pancytopenia.

This study was carried to identify the causes of pancytopenia and to find out the bone marrow morphology in cases of pancytopenia. It was a cross sectional study conducted over a period of two years in the Department of Pathology, Tribhuvan University Teaching Hospital. Bone marrow aspiration smears of patients fulfilling the criteria of pancytopenia were examined. The data obtained were analyzed using measures of central tendency. One hundred and forty eight cases underwent bone marrow aspiration and it constituted 15.74% of total cases. Mean age was 30 years (range, 1-79 years). 42 cases were children (28.37%). Male: female ratio was 1.5:1. The commonest cause was hypoplastic bone marrow seen in 43 cases (29%) followed by megaloblastic anemia in 35 cases (23.64%), and hematological malignancy in 32 cases (21.62%). Erythroid hyperplasia was seen in 29 cases (19.6%) and normal bone marrow was seen in 5 cases (3.38%). There was one case each of Niemann-Pick disease and metastatic neuroblastoma in children and chronic pure red cell aplasia and leishmaniasis in adults. Acute leukemia was the commonest hematological malignancy. In children, commonest finding was hypoplastic bone marrow (38.1%) while in adults megaloblastic anemia (30.18%) was commonest finding followed by hypoplastic anemia (25.47%). In present study bone marrow examination was able to establish diagnosis in 77% of cases. Hypoplastic marrow was the commonest diagnosis, followed by megaloblastic anemia, and hematological malignancies.

Diagnosis of subcutaneous cysticercosis in fine needle aspirates: a study of 10 cases.

The objective of this study is to document the value of Fine Needle Aspiration Cytology (FNAC) in the diagnosis of subcutaneous cysticercosis. Aspirates smears of 10 cases of subcutaneous swellings were studied over a period of 1 year between January 2004 and January 2005. The subcutaneous swellings were presented at different sites like cheek, neck, forearm, arm, chest wall and abdominal wall. In none of these cases was cysticercosis considered as diagnostic possibility. The characteristic cytomorphological features of parasitic tegument, parenchymatous portion, presence of epithelioid cells, giant cells and inflammatory cells in cytological smears help diagnose the cases of subcutaneous cysticercosis. Biopsy confirmation was possible in 5 cases, of which, two cases showed parenchymatous portion of the parasite. FNAC provides safe and rapid tool for diagnosis of subcutaneous cysticercosis. In endemic areas, cysticercosis should be considered one of the differential diagnosis of the subcutaneous swellings.

A rare case of juvenile fibrosarcoma of eyelid.

Juvenile fibrosarcoma is not an uncommon tumor in children; however, eyelid involvement is extremely rare. Very few cases have been reported in the literature. This is the first case of JFS of the eyelid in Tribhuvan University Teaching Hospital and the first diagnosed case in Nepal. Histologically, it is similar to adult fibrosarcoma but it has an excellent prognosis. Surgical excision is the mainstay of treatment; however chemotherapy has been proved effective. Here we present a case of juvenile fibrosarcoma of the eyelid in a four year female child presenting with a rapidly enlarging, painless, left upper eyelid mass. An incisional biopsy, from the eyelid mass, showed typical histopathological features of juvenile fibrosarcoma.

Histopathological analysis of hysterectomy specimens.

This was a retrospective study carried out on all hysterectomy specimens sent to Department of Pathology of Tribhuvan University Teaching Hospital, Kathmandu, Nepal from 1st September 2005 to 28th February 2006, to study the histopathological findings of these specimens. All informations used in the study were obtained from the records of Department of Pathology of the hospital. Out of 221 hysterectomy specimens received during the study period, 139 (62.9%) were total abdominal and 82 (37.1%) were vaginal hysterectomy specimens. Mean age of the patient was 53.4 years for vaginal hysterectomy group where as it was 37.6 years for total abdominal hysterectomy with unilateral salpingo-oophorectomy and 46.3 years for total abdominal hysterectomy with bilateral salpingo-oophorectomy group. Uterine prolapse was commonest indication of hysterectomy overall (37.1%) and accounted for 98.8% of vaginal hysterectomies. Other common indications of hysterectomy were uterine fibroid (24.9%), ovarian tumor (14.9%) and dysfunctional uterine bleeding (7.7%). Leimyoma was the most common pathology found in uterine corpus (27.1%). Chronic cervicitis in cervix, functional cysts in ovaries and paratubal cysts in fallopian tubes were most common histological findings. Ovarian neoplasms accounted for 18.3% of ovarian pathology. 38% specimens were unremarkable histopathologically. In Tribhuvan University Teaching Hospital, abdominal hysterectomies are more common than vaginal hysterectomies. Most vaginal hysterectomies are done for uterine prolapse and patients are older than those undergoing abdominal hysterectomies. Most abdominal hysterectomies are performed for uterine leiomyomas. Hysterectomy specimens may be unremarkable histopathologically, most of which are vaginal hysterectomies done for uterine prolapse.

Study of effusion cytology in patients with simultaneous malignancy and ascites.

OBJECTIVE: To evaluate sensitivity of effusion cytology in detecting malignancy. MATERIALS AND METHODS: Effusion cytology was studied from 37 malignancy associated and 28 non malignancy associated ascitic fluid samples. RESULTS: Out of 65 cases, 44 (67.7%) effusions were reported negative, 15 (23.1%) were positive and 6 (9.2%) were suspicious for malignancy. Thus total 21 effusions (32.3%) were tumour cell positive. All 21 (100%) were true positive, none (0%) was false positive, 28 (63.6%) were true negative and 16 (36.4%) were false negative. Thus ascitic fluid cytology had sensitivity of 56.7% and specificity of 100%. Predictive value of positive test and negative test was 100% and 63.6% respectively. Stomach was the most common primary site of malignancy associated with ascites (11/37 i.e. 29.7%) where as adenocarcinoma was the most common type of malignancy (11/15 i.e.73.3%) in ascitic fluid cytology. CONCLUSION: Ascitic fluid cytology is a simple and useful procedure with sensitivity of 56.7% and should be routinely requested.

Malignant teratoid medulloepithelioma in eye.

Malignant teratoid medulloepithelioma is an extremely rare tumor occurring in children younger than 5 years of age, arising from ciliary body epithelium or iris but few arise from optic nerve and retina. This report concerns a 5 years old boy who presented with pain, redness and protrusion of right eye. Histopathologically, the tumor was composed of epithelial and sarcomatoid component. The pseudostratified primitive appearing epithelial cells were arranged mainly in diffuse pattern, nests cords and tubules. At places, pseudo rosette and true rosette were seen. Mitoses were frequent consisting of 7-10/ HPF. The sarcomatoid component consisting of spindle shaped cells arranged in interlacing bundle were also seen. Mitoses counted 5-7/HPF. Massive areas of necrosis and hemorrhage along with calcification, focal area of mature cartilage were present. Vascular and optic nerve invasions were seen. This case of malignant teratoid medulloepithelioma is the second case diagnosed in TU Teaching Hospital within the period of 10 years and reported because of its rarity. The differentiations from other tumors of the orbit such as small cell tumor were discussed.