Anorectal Melanoma—Brownish Black Mass Not Always a Hemorrhoid

Abstract The non-specific clinical symptoms of anorectal brownish-black mass do not help to differentiate colorectal cancer, hemorrhoids, rectal ulcers which result in a delayed diagnosis or lead to inadequate management of lethal anorectal melanoma. Primary malignant melanoma of the anorectal region is an uncommon tumor, constituting approximately 1% of anal canal tumors which may be misdiagnosed clinically as hemorrhoids. Because of aggressive behavior and poor prognosis, efficient and prompt diagnosis is required in these cases. We report the 2 cases of this rare tumor.

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Anorectal melanoma: An atypical cause of rectorrhagia

Gastroenterología y Hepatología (English Edition) ◽

10.1016/j.gastre.2017.10.009 ◽

2017 ◽

Vol 40 (9) ◽

pp. 623-625

Author(s):

Cristina Saldaña Dueñas ◽

Silvia Goñi Esarte ◽

Jose Francisco Juanmartiñena Fernández ◽

Marta Montes Diaz ◽

Rosa Iglesias Picazo

Keyword(s):

Anorectal Melanoma

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Four new species of Arthothelium (Arthoniales, Ascomycetes) from Africa and Socotra

Phytotaxa ◽

10.11646/phytotaxa.331.1.3 ◽

2017 ◽

Vol 331 (1) ◽

pp. 51

Author(s):

DRIES VAN DEN BROECK ◽

ANDERS TEHLER ◽

TAHINA RAZAFINDRAHAJA ◽

DAMIEN ERTZ

Keyword(s):

South Africa ◽

New Species ◽

Democratic Republic ◽

Terminal Cell ◽

Tropical Africa ◽

Republic Of The Congo ◽

Brownish Black

Four species of Arthothelium from Africa and Socotra are described as new to science: Arthothelium atrorubrum from Madagascar, characterized by irregularly rounded blackish ascomata with a deeply red hypothecium and submuriform ascospores; Arthothelium aurantiacopruinosum from the Democratic Republic of the Congo, characterized by black, irregularly rounded to stellate, orange pruinose ascomata and muriform ascospores with two larger terminal cells; Arthothelium frischianum from Madagascar, characterized by brownish-black minute irregular ascomata with remnants of thallus and muriform ascospores with one larger terminal cell; Arthothelium miesii from Socotra (Yemen), characterized by a thick thallus, immersed, stellate to cerebriform, brownish, greyish pruinose ascomata and submuriform ascospores. A key to all reported species of Arthothelium from tropical Africa (South Africa excluded) and Socotra is provided.

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A new species of Triangularia from Ohio soil

Canadian Journal of Botany ◽

10.1139/b75-070 ◽

1975 ◽

Vol 53 (6) ◽

pp. 560-564 ◽

Cited By ~ 3

Author(s):

L. H. Huang

Keyword(s):

New Species ◽

Soil Sample ◽

Alcohol Treatment ◽

Conidial State ◽

Transverse Septum ◽

Brownish Black ◽

A New Species

Triangularia backusii n. sp. was isolated from a soil sample collected in Ohio, U.S.A., and was subjected to alcohol treatment. Triangularia backusii is characterized by oval to pyriform perithecia, elongate-clavate asci, and obovoid ascospores with hyaline, gelatinous appendages. The ascospores are two-celled with a transverse septum; the upper cell is obovoid with a truncate base and brownish black to black and the lower cell is triangular and pale brown to brown. The conidial state is assignable to the genus Phialophora. The new species differs from other known Triangularia species in having the largest ascospores.

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ON NEW SPECIES OF AGROTIS

The Canadian Entomologist ◽

10.4039/ent7186-10 ◽

1875 ◽

Vol 7 (10) ◽

pp. 186-188 ◽

Cited By ~ 1

Author(s):

A. R. Grote

Keyword(s):

New Species ◽

Brownish Black ◽

Internal Margin

♂. Allied to A. bicarnea Guen,; smaller and distinguishable by the evenness of the t. p. line. Fore wings dead brownish black. T. a. line rigidly oblique to submedian fold, not rounded as in its ally, and with a less prominent tooth on internal margin. A very faint yellowish shading to the line and also on the costa at inception of t. p. line, where A. bicarnea is strongly marked with carneous. T. p. line shaped as in its ally, but even, geminate, the inner line not scalloped; the component lines include a pale shading.

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Potential Benefit of Radiation Therapy in Resectable Anorectal Melanoma

International Journal of Radiation Oncology*Biology*Physics ◽

10.1016/j.ijrobp.2009.07.633 ◽

2009 ◽

Vol 75 (3) ◽

pp. S274-S275

Author(s):

A.S. Reese ◽

C.G. Willett ◽

D.S. Tyler ◽

H.F. Seigler ◽

R.W. Clough ◽

...

Keyword(s):

Radiation Therapy ◽

Potential Benefit ◽

Anorectal Melanoma

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Carex concava (Carex sect. Rhomboidales, Cyperaceae), a new species from Hainan, China

Phytotaxa ◽

10.11646/phytotaxa.283.2.4 ◽

2016 ◽

Vol 283 (2) ◽

pp. 155

Author(s):

HU-BIAO YANG ◽

XIAO-XIA LI ◽

CHANG-JUN BAI ◽

WEN-QIANG WANG ◽

GUO-DAO LIU

Keyword(s):

New Species ◽

Brownish Black ◽

A New Species

A new species of Carex sect. Rhomboidales, Carex concava, is described and illustrated from Hainan, China. The new species is similar to C. paracheniana but differs in having wider blades and longer sheaths of bracts; inflorescence with 3 spikes; terminal spike 2–6 cm long and with a 4–14 cm long peduncle; lateral spikes 3–6 cm long, loosely flowered and with 8–15 cm long peduncles; staminate glume ovate, 1-veined costa excurrent into a shortly awn ca. 0.3 mm; pistillate glume ovate, ca. 4 mm long, 1-veined costa excurrent into a awn ca. 1 mm; perigynia fusiform and green; nutlets inclined-oval, brownish black, with 3 angles deeply constricted at the middle and the side toward of spike-stalk deeply concave at base.

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