Infantile perineal protrusion in two monochorionic twins

Paola Cavicchioli1, Enrico Valerio2, Mario Cutrone1

  • 1Department of Pediatrics, Ospedale Dell'Angelo, Mestre, Venice, Italy.

AJP Reports
|December 3, 2014
PubMed

Insights

Infantile perineal protrusion (IPP) in identical twins suggests a genetic link. This rare condition resolved spontaneously in both infants within six weeks without lasting bowel issues.

Area of Science:

  • Pediatrics
  • Genetics
  • Dermatology

Background:

  • Infantile perineal protrusion (IPP) is a rare condition with approximately 100 reported cases.
  • IPP is typically classified into congenital/familial, acquired (constipation-related), and lichen sclerosus et atrophicus-associated types.

Observation:

  • This case report presents two female monochorionic-monoamniotic twins with infantile perineal protrusion (IPP) at birth.
  • Both twins exhibited similar lesions that healed spontaneously within six weeks.
  • Neither twin experienced any alvus disturbances during the follow-up period.

Findings:

  • This is the first reported instance of IPP occurring in monochorionic-monoamniotic twins.
  • The simultaneous occurrence of IPP in genetically identical twins supports the hypothesis of hereditary or genetic factors.
  • The condition resolved spontaneously without intervention or long-term complications.

Implications:

  • This case provides novel evidence for a potential genetic predisposition in the development of infantile perineal protrusion.
  • Further research into the genetic underpinnings of IPP is warranted.
  • Understanding the genetic basis may aid in early diagnosis and management of IPP.

Related Concept Videos

Muscles of the Pelvic Floor and Perineum01:26

Muscles of the Pelvic Floor and Perineum

The muscles of the pelvic floor and perineum are crucial for supporting the pelvic organs, controlling continence, and aiding in sexual function, childbirth, and core stability. They are typically divided into the superficial perineal layer and the deep pelvic floor layer.
Perineal Layer
The perineum is a diamond-shaped area below the pelvic diaphragm, divided into an anterior urogenital triangle that contains the external genitals and a posterior anal triangle housing the anus. The urogenital...
6.6K
Types of Membrane Protrusions01:28

Types of Membrane Protrusions

The protrusion of the cell surface is an initial step for several cellular processes, including cell migration, phagocytosis, and neurite outgrowth. These membrane protrusions are a result of cytoskeletal rearrangement. The most  widely observed cell protrusions include lamellipodia, pseudopodia, filopodia, microvilli, invadopodia, and podosomes. These protrusions can be of two types — static or dynamic.
The microvilli, an example of stable protrusions, are finger-like projections...
4.0K
Peritoneum01:21

Peritoneum

The peritoneum is a vital membrane that lines the abdominal cavity and covers most of the organs within it. It plays a crucial role in protecting the organs, providing a smooth surface for their movement, and facilitating various physiological processes. Understanding the anatomy and function of the peritoneum is essential for comprehending the complexities of the abdominal region.
Anatomy of the Peritoneum
The peritoneum is divided into two layers: the parietal peritoneum and the visceral...
13.4K
Nondisjunction01:21

Nondisjunction

Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate correctly and move to the opposite poles of the cells. This produces daughter cells with abnormal chromosome numbers.  Nondisjunction is common during anaphase I or anaphase II of meiosis.  Mutations in synaptonemal complex proteins that attach homologous chromosomes increase the chances of nondisjunction in anaphase I of meiosis I. In contrast, mutations in topoisomerases and condensins that hold...
6.0K
Nondisjunction01:29

Nondisjunction

During meiosis, chromosomes occasionally separate improperly. This occurs due to failure of homologous chromosome separation during meiosis I or failed sister chromatid separation during meiosis II. In some species, notably plants, nondisjunction can result in an organism with an entire additional set of chromosomes, which is called polyploidy. In humans, nondisjunction can occur during male or female gametogenesis and the resulting gametes possess one too many or one too few chromosomes.
84.3K
Uterus and Cervix01:18

Uterus and Cervix

The uterus, commonly called the womb, is a vital reproductive organ in females designed to provide a nurturing environment for the implantation and growth of an embryo. It is shaped like a hollow pear and positioned between the urinary bladder and the rectum. The uterus's structure allows it to support and protect a developing fetus throughout pregnancy.
The uterus is securely anchored within the pelvic cavity by paired broad ligaments on either side. It is further stabilized by three pairs...
8.1K