Clinical and ultrastructural studies in melanosis duodeni

Mayumi Ueno, Yoshio Mizuno, Kiyotaka Kamegaya, Masaharu Tsuchiya, Kensuke Kobayashi, Yoshiki Hamada, Haruhiko Ogata, Yasushi Iwao, Toshifumi Hibi

Research output: Contribution to journalArticle

Abstract

Four cases with melanosis duodeni were described. Two cases were associated with chronic renal failure, and one case with hypertension. The other case is a deaf 23-year-old woman suffering from psychogenic vomiting and constipation. The duodenal mucosa of these cases, on endoscopy, showed scattered black or brown flecks, extending from the bulb to the proximal second portion of the duodenum. The density of the color faded away gradually at the distal portion of the papilla Vater. Through a magnifying fiberscope, the stroma and the tip of the villi appeared to be pigmented. On electron microscopy, the size and shape of pigmented granules were variable in individual case. The electron-probe x-ray analysis showed that these pigments contained ferrum and/or sulphur. These ultrastructual findings reveal that the constituents of pigment differ in each case of melanosis duodeni.

Original languageEnglish
Pages (from-to)1274
Number of pages1
JournalGastroenterological Endoscopy
Volume34
Issue number6
DOIs
Publication statusPublished - 1992
Externally publishedYes

Fingerprint

Melanosis
Constipation
Duodenum
Sulfur
Endoscopy
Chronic Kidney Failure
Vomiting
Electron Microscopy
Mucous Membrane
Color
X-Rays
Electrons
Hypertension
Clinical Studies
Flecks

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Gastroenterology

Cite this

Ueno, M., Mizuno, Y., Kamegaya, K., Tsuchiya, M., Kobayashi, K., Hamada, Y., ... Hibi, T. (1992). Clinical and ultrastructural studies in melanosis duodeni. Gastroenterological Endoscopy, 34(6), 1274. https://doi.org/10.11280/gee1973b.34.1274

Clinical and ultrastructural studies in melanosis duodeni. / Ueno, Mayumi; Mizuno, Yoshio; Kamegaya, Kiyotaka; Tsuchiya, Masaharu; Kobayashi, Kensuke; Hamada, Yoshiki; Ogata, Haruhiko; Iwao, Yasushi; Hibi, Toshifumi.

In: Gastroenterological Endoscopy, Vol. 34, No. 6, 1992, p. 1274.

Research output: Contribution to journalArticle

Ueno, M, Mizuno, Y, Kamegaya, K, Tsuchiya, M, Kobayashi, K, Hamada, Y, Ogata, H, Iwao, Y & Hibi, T 1992, 'Clinical and ultrastructural studies in melanosis duodeni', Gastroenterological Endoscopy, vol. 34, no. 6, pp. 1274. https://doi.org/10.11280/gee1973b.34.1274
Ueno M, Mizuno Y, Kamegaya K, Tsuchiya M, Kobayashi K, Hamada Y et al. Clinical and ultrastructural studies in melanosis duodeni. Gastroenterological Endoscopy. 1992;34(6):1274. https://doi.org/10.11280/gee1973b.34.1274
Ueno, Mayumi ; Mizuno, Yoshio ; Kamegaya, Kiyotaka ; Tsuchiya, Masaharu ; Kobayashi, Kensuke ; Hamada, Yoshiki ; Ogata, Haruhiko ; Iwao, Yasushi ; Hibi, Toshifumi. / Clinical and ultrastructural studies in melanosis duodeni. In: Gastroenterological Endoscopy. 1992 ; Vol. 34, No. 6. pp. 1274.
@article{e167cf89ad7542c6bb45ce41574903a9,
title = "Clinical and ultrastructural studies in melanosis duodeni",
abstract = "Four cases with melanosis duodeni were described. Two cases were associated with chronic renal failure, and one case with hypertension. The other case is a deaf 23-year-old woman suffering from psychogenic vomiting and constipation. The duodenal mucosa of these cases, on endoscopy, showed scattered black or brown flecks, extending from the bulb to the proximal second portion of the duodenum. The density of the color faded away gradually at the distal portion of the papilla Vater. Through a magnifying fiberscope, the stroma and the tip of the villi appeared to be pigmented. On electron microscopy, the size and shape of pigmented granules were variable in individual case. The electron-probe x-ray analysis showed that these pigments contained ferrum and/or sulphur. These ultrastructual findings reveal that the constituents of pigment differ in each case of melanosis duodeni.",
author = "Mayumi Ueno and Yoshio Mizuno and Kiyotaka Kamegaya and Masaharu Tsuchiya and Kensuke Kobayashi and Yoshiki Hamada and Haruhiko Ogata and Yasushi Iwao and Toshifumi Hibi",
year = "1992",
doi = "10.11280/gee1973b.34.1274",
language = "English",
volume = "34",
pages = "1274",
journal = "Gastroenterological Endoscopy",
issn = "0387-1207",
publisher = "Japan Gastroenterological Endoscopy Society",
number = "6",

}

TY - JOUR

T1 - Clinical and ultrastructural studies in melanosis duodeni

AU - Ueno, Mayumi

AU - Mizuno, Yoshio

AU - Kamegaya, Kiyotaka

AU - Tsuchiya, Masaharu

AU - Kobayashi, Kensuke

AU - Hamada, Yoshiki

AU - Ogata, Haruhiko

AU - Iwao, Yasushi

AU - Hibi, Toshifumi

PY - 1992

Y1 - 1992

N2 - Four cases with melanosis duodeni were described. Two cases were associated with chronic renal failure, and one case with hypertension. The other case is a deaf 23-year-old woman suffering from psychogenic vomiting and constipation. The duodenal mucosa of these cases, on endoscopy, showed scattered black or brown flecks, extending from the bulb to the proximal second portion of the duodenum. The density of the color faded away gradually at the distal portion of the papilla Vater. Through a magnifying fiberscope, the stroma and the tip of the villi appeared to be pigmented. On electron microscopy, the size and shape of pigmented granules were variable in individual case. The electron-probe x-ray analysis showed that these pigments contained ferrum and/or sulphur. These ultrastructual findings reveal that the constituents of pigment differ in each case of melanosis duodeni.

AB - Four cases with melanosis duodeni were described. Two cases were associated with chronic renal failure, and one case with hypertension. The other case is a deaf 23-year-old woman suffering from psychogenic vomiting and constipation. The duodenal mucosa of these cases, on endoscopy, showed scattered black or brown flecks, extending from the bulb to the proximal second portion of the duodenum. The density of the color faded away gradually at the distal portion of the papilla Vater. Through a magnifying fiberscope, the stroma and the tip of the villi appeared to be pigmented. On electron microscopy, the size and shape of pigmented granules were variable in individual case. The electron-probe x-ray analysis showed that these pigments contained ferrum and/or sulphur. These ultrastructual findings reveal that the constituents of pigment differ in each case of melanosis duodeni.

UR - http://www.scopus.com/inward/record.url?scp=85007662769&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85007662769&partnerID=8YFLogxK

U2 - 10.11280/gee1973b.34.1274

DO - 10.11280/gee1973b.34.1274

M3 - Article

VL - 34

SP - 1274

JO - Gastroenterological Endoscopy

JF - Gastroenterological Endoscopy

SN - 0387-1207

IS - 6

ER -