Ravikala V. Rao

Carcinoma of the rectal pouch following restorative proctocolectomy: Report of a case

A case of adenocarcinoma developing in the pouch following restorative proctocolectomy is presented. This seems to be the third reported in the literature. The carcinoma developed from the remnants of precancerous rectal mucosa left in the muscular rectal cuff. The patient had been suffering from ulcerative colitis for 17 years prior to the development of the malignancy. He presented with features of subacute intestinal obstruction. Diagnosis was by sigmoidoscopic examination of the pouch and biopsy. He was treated with abdominoperineal resection of the pouch and rectum, followed by chemotherapy.

Malignant oncocytoma of the nasal cavity: A case report

Malignant oncocytoma is a rare clinical entity and is most commonly seen in the salivary glands. Its occurrence in the nasal cavity is extremely rare, and only 4 such cases have been reported in the literature. The authors report one such case in a 60-year-old woman, which presented as a slow-growing nasal mass arising from the nasal septum, with no lymph node metastasis, which was successfully managed by a combined modality of treatment-surgery followed by radiation therapy. The relevant literature has been reviewed. The case is discussed as a possible differential diagnosis for a mass in the nose.

Characterization of Mechanical Behavior of Metallic and Non-metallic Particulate Filled Epoxy Matrix Composites

Studies were carried out on RT cure epoxy (LY556+HY951) composite system comprised of metallic and non-metallic fillers. The results of the studies carried out on composites with three distinctly different particulate fillers, representing ductile (Cu and Al), brittle (SiC), and soft (Gr) type of materials regarding the mechanical properties, showed that the tensile and flexural strength of the particulate composites degraded with filler loading, whereas the modulus (both tensile and flexural) of the composites increased with the filler loading for the range of filler contents considered (10—40 wt%). The compression strength of all the composites increased to a maximum up to a filler loading of 30% and then decreased beyond this value, with the SiC-Ep composites exhibiting the highest improvement in the compression strength.

Clear cell carcinoma of the larynx — a case report

Clear cell carcinoma (CCC) of the larynx is extremely rare and to the best of our knowledge no such case has been reported in the paediatric age group. These tumours resemble the clear cell carcinoma of the major and minor salivary glands. We report such a lesion in a 15 years old boy presenting with hoarseness and an exophytic growth in the glottis. A frontolateral conservation laryngectomy with laryngoplasty was done and over 2 years follow-up has shown no evidence of loco-regional recurrence and he enjoys an acceptable voice.

Extraskeletal myxoid chondrosarcoma of the chest wall masquerading as a breast tumor. A case report.

BACKGROUNDnExtraskeletal myxoid chondrosarcoma is a rare tumor that usually occurs in the soft tissues of extremities. Cytologic features of chondrosarcoma arising from a rib and presenting as a breast mass were reported by Molyneux et al in 1995. However, to the best of our knowledge, the cytology of extraskeletal myxoid chondrosarcoma of the chest wall presenting as a breast mass has not been documented before.nnnCASEnA 30-year-old female presented with left-sided chest pain and a hard lump in the breast of two months duration. Fine needle aspiration cytology was done, and a possible diagnosis of mucinous carcinoma or mixed tumor of the breast was suggested, with advice to prepare a frozen section before undertaking a radical procedure. On imprint cytology and frozen section a diagnosis of extraskeletal myxoid chondrosarcoma was made and confirmed by histopathology and immunohistochemistry.nnnCONCLUSIONnIt is rare for extraskeletal myxoid chondrosarcoma to occur in the chest wall. This problem is compounded by the fact that cells of extraskeletal myxoid chondrosarcoma which resemble epithelial cells, can very closely mimic some malignant breast tumors.

Primary haemangiosarcoma of the tongue.

A 52-year-old male had a biopsy done from a tongue lesion and was reported to have primary haemangiosarcoma. The case has been reported because of the rarity of this tumour.

Infantile Cartilaginous Hamartoma of the Rib. A case report.

BACKGROUNDnInfantile cartilaginous hamartoma of the rib is a rare condition occurring in newborn infants, with an incidence of 1 in 3,000 (0.03%) among primary bone tumor cases. Reports of this condition so far have presented the clinical, radiologic and histopathologic features. To the best of our knowledge, reports of the cytopathologic features have not been documented. In the present case report, clinical, radiologic and cytopathologic features and differential diagnosis are enumerated.nnnCASEnA 1-month-old, male infant presented with a chest wall mass with a clinical diagnosis of osteochondroma. On fine needle aspiration cytology, a diagnosis of infantile cartilaginous hamartoma of the rib was suggested; it was supplemented by the clinical history and radiologic findings.nnnCONCLUSIONnAlthough rare, this condition ought to be kept in mind while dealing with infantile chest wall masses to avoid an erroneous diagnosis of malignancy, owing to its ominous cytopathologic features.

Studies on Rheological and Physical Properties of Metallic and Non-metallic Particulate Filled Epoxy Composites

Studies were carried out on RT cure epoxy (LY556+HY951) composite system comprising of metallic and non-metallic fillers. The results of the studies carried out on the composites containing three distinctly different particulate fillers, representing metallic (Cu and Al), ceramic (SiC) and solid lubricant Gr materials showed that the viscosities of the composite formulations (slips) increased with increased filler loading for a given composite. The composite formulations containing Gr and SiC exhibited respectively the highest and lowest increments in their viscosities. Further, the densities of these composites increased with increased filler content, in the order of respective densities of the fillers used. Also, the hardness of the composites increased with the increased filler content, except for the Gr filled composites, which showed an opposite trend.