[Blastic plasmocytoid dendritic cell neoplasm: Report of one case].

We report a 74 years old male consulting for multiple painless non pruriginous pink plaques and nodules of truncal distribution that appeared 15 days earlier. A skin biopsy disclosed a blastic plasmocytoid dendritic cell neoplasm. A staging CAT scan showed lymphadenopathies located around the trachea and its bifurcation.

[Large cell calcifying Sertoli cell tumor: report of one case].

Sertoli cell tumors are less than 1% of all testicular tumors. We report a 14-year-old male presenting with a left testicular mass. Orchiectomy was carried out and the pathological study informed a large cell calcifying Sertoli cell tumor (LCCSCT).

[Tungiasis. Report of one case].

We report a 54-year-old male that, after working in a rural zone of Rio de Janeiro, Brazil, presented with an itching cutaneous lesion in the wrist with a black small central zone. The patient extracted from the lesion a on of 0.5 mm diameter.

[Prognostic value of extracapsular lymph node involvement among patients with gastric cancer].

Background: Extracapsular lymph node involvement has a negative prognosis in malignant tumors.

Aim: To assess the prognostic importance of extracapsular lymph node involvement in patients with gastric cancer with lymph node metastases.

Material And Methods: Clinical and morphological features and survival of patients with gastric cancer and lymph node involvement operated between 1986 and 2003, were analyzed.

[Morphological findings in fatal cases of hantavirus cardiopulmonary syndrome. Report of 7 autopsies].

Introduction: Hantavirus cardiopulmonary syndrome (HCPS) is an acute infectious disease characterized by sudden cardiorespiratory failure and high mortality, caused by a RNA virus of the genus Hantavirus, family Bunyaviridae, 15% of Chilean cases have been detected in the Araucania Region.

Objective: To determine in fatal cases of HCPS, clinical and morphological characteristics.

Materials And Methods: Descriptive-retrospective analysis of seven fatal cases with postmortem study of HCPS, attended between 1997 and 2009 at the Hospital of Temuco, Chile.

[Diagnostic value of frozen section biopsy during surgery for breast lesions or neoplasms].

Background: During the surgical treatment of breast neoplasms (benign or malignant), frozen section biopsy is frequently requested to assess the kind of lesion and determine the surgical margins.

Aim: To assess the diagnostic yield of frozen section breast biopsy.

Material And Methods: AH the pathological reports of frozen section biopsies and definitive biopsies of 337 women aged 26 to 88 years, operated for suspected breast neoplasms between 2002 and 2006, were reviewed.

[Gene methylation patterns in digestive tumors].

Background: The loss of tumor suppressor gene function damages the defensive mechanisms that protect the indemnity of genetic material. Promoter gene methylation is one of the inactivation mechanisms of suppressor genes.

Aim: To study the methylation pattern of a group of genes in biopsy samples of gastrointestinal tumors.

[Colitis cystica profunda: report of one case].

Colitis cystica profunda is a benign condition that can be confused with adenocarcinoma. We report a 35 year-old woman that received radiotherapy for a uterine cervical carcinoma who presented intermittent hematochezia three times after ending the therapy. This episode was diagnosed and treated as a radiation colitis and the patient remained asymptomatic for six years.