Molecular and immunohistochemical profile of a basaloid (cloacogenic) carcinoma of the sigmoid colon

Possible predictive value for clinical outcomes

Simona Gurzu, Z. Szentirmay, Tivadar Bara, Olga Iurcsuk, Ioan Jung

Research output: Contribution to journalArticle

Abstract

A 61-year-old woman was hospitalized with a 5-week history of abdominal discomfort, change in bowel habits, and weight loss. Colonoscopy showed a protruded tumor of the sigmoid colon first diagnosed as undifferentiated carcinoma. Surgical resection of the sigmoid colon was performed. Histological examination of the surgical specimen showed a proliferation of basaloid cells arranged in tumor clusters with central comedonecrosis and peripheral palisading of the nuclei. The tumor invaded the subserosa and presented liver metastasis without lymph node metastases. The tumor cells were marked by keratin AE1/AE3, keratin 5/6, epithelial membrane antigen, bcl-2, vascular endothelial growth factor, CD105, neuron-specific enolase, MLH-1, MSH-2, and p53, and were negative for keratin 7/20, chromogranin, synaptophysin, carcinoembryonic antigen, p63, c-KIT, and maspin. A high p53 nuclear index was also detected. On the basis of these characteristics and molecular examinations, the final diagnosis was microsatellite stable/human papilloma virus-negative/K-ras mutated/BRAF wild-type basaloid carcinoma (BC). Only seven BCs of the colon were reported in the literature, this being the eighth one and the first case that reports new molecular findings about microsatellite instability, K-ras/BRAF mutations, angiogenesis, and maspin expression in BC, with direct involvement in targeted therapy.

Original languageEnglish
Pages (from-to)570-573
Number of pages4
JournalEuropean Journal of Gastroenterology and Hepatology
Volume26
Issue number5
DOIs
Publication statusPublished - 2014

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Sigmoid Colon
Carcinoma
Papillomaviridae
Neoplasms
Keratin-6
Keratin-20
Keratin-5
Keratin-7
Neoplasm Metastasis
Chromogranins
Melanocyte-Stimulating Hormones
Mucin-1
Microsatellite Instability
Synaptophysin
Phosphopyruvate Hydratase
Carcinoembryonic Antigen
Colonoscopy
Keratins
Microsatellite Repeats
Vascular Endothelial Growth Factor A

Keywords

  • basaloid carcinoma
  • cloacogenic carcinoma
  • maspin
  • sigmoid colon
  • therapy

ASJC Scopus subject areas

  • Gastroenterology
  • Hepatology
  • Medicine(all)

Cite this

Molecular and immunohistochemical profile of a basaloid (cloacogenic) carcinoma of the sigmoid colon : Possible predictive value for clinical outcomes. / Gurzu, Simona; Szentirmay, Z.; Bara, Tivadar; Iurcsuk, Olga; Jung, Ioan.

In: European Journal of Gastroenterology and Hepatology, Vol. 26, No. 5, 2014, p. 570-573.

Research output: Contribution to journalArticle

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