Kazuhiro Mita

Yokohama City University, Yokohama, Kanagawa, Japan

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Publications (4)3.03 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: Sebaceous carcinoma is the rarest type of oral malignancies. We report a case of primary sebaceous carcinoma of the tongue. Systemic imaging studies revealed that the patient had a T2N2cM0 (International Union Against Cancer guidelines) primary lingual tumor. Histopathological examination revealed neoplastic sebocytic and basaloid cells, and Sudan III staining and electron microscopy revealed intracytoplasmic lipid droplets. The neoplastic cells stained positive for adipophilin; epithelial membrane antigen; epithelial antigen; and cytokeratins 7, 8, and 15, but negative for cytokeratins 5/6, 18, 19, and 20; the androgen receptor; and carcinoembryonic antigen. Superselective intraarterial chemotherapy was administered via the superficial temporal artery concurrent with daily radiotherapy. Multiple biopsies confirmed a complete response of the primary lesion. The patient then underwent neck dissection followed by pathological examination, which revealed lymph nodes metastases. After postoperative radiotherapy to the neck, distant metastases were identified in the mediastinal lymph nodes and the lung. The patient died 17 months after completing the initial course of chemoradiotherapy. Our case demonstrates that superselective intraarterial chemotherapy combined with concurrent radiotherapy can be effective in treating the primary lesion of patients with a sebaceous carcinoma of the tongue. However, an effective strategy to eradicate metastases has yet to be established.
    Medical Molecular Morphology 12/2010; 43(4):246-52. DOI:10.1007/s00795-010-0521-4 · 1.46 Impact Factor
  • 01/2005; 44(6):338-344. DOI:10.5795/jjscc.44.338
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    ABSTRACT: There are few descriptions of the cytologic features of subependymoma because this neoplasm is rare and most commonly encountered incidentally at autopsy. Here we report a surgical case of subependymoma occurring in the lateral ventricle and provide the first documentation of the crush cytologic features of this tumor. A 34-year-old woman was found to have a tumorous lesion in the right lateral ventricle. At surgery, a 2-cm-diameter tumor was detected in the anterior horn. Histologic examination during surgery revealed that the mass was composed of loose,fibrillary networks and clusters of nuclei showing mild pleomorphism. A number of microcystic formations were evident. Histologically, the neoplasm was considered benign--specifically, a subependymoma. Papanicolaou- or Giemsa-stained crush specimens and imprint smears were also prepared. The cytologic morphology was fundamentally the same as the histologic. In the crush specimens, microcystic formations were readily visible. Moreover, details of the cellular morphology were more easily recognized in the cytologic slides than in the frozen sections. Cytologic examination, particularly crush cytology, appears to be useful for the rapid diagnosis of subependymoma during surgery in combination with the examination of frozen histologic sections.
    Acta cytologica 01/2001; 45(4):636-40. · 1.56 Impact Factor
  • 01/2001; 45(4):636-640. DOI:10.1159/000327879