Perianal venous thrombosis

Description

Extremely painful cherry like lesions under the perianal skin containing clotted blood have been attributed to rupture of a blood vessel with haematoma. However, histology confirmed that these lesions are thrombi lying within the thin-walled vessels of the external anal plexus.

Index terms

Perianal venous thrombosis
Perianal haematoma (nontraumatic)
anal thrombosis

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perianal thrombosis
thrombosed external haemorrhoid
thrombosed external pile

Inclusions

Perianal haematoma (nontraumatic)
perianal thrombosis

Exclusions from above levels

01 – Certain infectious or parasitic diseases
02 – Neoplasms
05 – Endocrine, nutritional or metabolic diseases

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06 – Mental, behavioural or neurodevelopmental disorders
18 – Complications of pregnancy, childbirth and the puerperium
22 – Injury, poisoning or certain other consequences of external causes

Sibling codes

DB60 – Haemorrhoids
DB62 – Residual haemorrhoidal skin tags
DB6Y – Other specified haemorrhoids or perianal venous conditions
DB6Z – Haemorrhoids or perianal venous conditions, unspecified

Foundation entity

Perianal venous thrombosis – http://id.who.int/icd/entity/287994615

Allowed postcoordination axes

Part of: 13: Diseases of the digestive system